Data Description

This page summarizes information about the selected resource and its origin based on SPASE metadata.

Table of Contents

  1. Product
  2. Repository
  3. Instruments
  4. Observatory
  5. Persons

SPASE version 2.0.0

Numerical Data Product: IMP 8 Merge Data Set

Resource ID
spase://VEPO/NumericalData/IMP8/CPME/EPE/PT20S Get XML
Name
IMP 8 Merge Data Set
Description

This data set contains 20.48s IMP8 CPME and EPE energetic particle data, along with IMP8 magnetic field and plasma data to facilitate use of the particle data. CPME data consist of: spin-integrated, 20.48s resolution count rates of protons in ten energy channels (0.29-0.50 to 90-440 MeV), of alpha particles in six channels (0.59-1.14 to 28-52 MeV/n), of Z>=3 particles in five channels (0.70-1.45 to 6-105 MeV/n), of electrons in 3 channels (0.22-2.5 to 0.80-2.5 MeV), of protons and alpha particles mixed in two channels (>35, >50 MeV/n) and uncertainties in all the preceding 20-s rates; spin-integrated, 10.24s count rates of protons in three energy channels (0.29-0.50 to 0.96-2.00 MeV) and of electrons in the three energy channels given above, plus uncertainties and data quality flags for all these 10.24s rates; 10.24s count rates in 8 spin sectors for 0.29-0.50 MeV protons and for 0.22-2.50 MeV electrons and their uncertainties and dataquality flags; 20.48s count rates in 8 spin sectors for 0.59-1.14 and 1.8-4.2 MeV/n alpha particles and for 0.7-3.3 and 3.1-8.8 MeV/n Z>= 3 particles, and their uncertainties anddata quality flags. EPE data consist of 16-sectored, 20.48s counts (not rates) for Z>=1 particles in 0.05-0.22 and 0.22-0.80 MeV/n channels, for electrons in 0.03-0.10 and 0.10-0.20 MeV channels and for Z>=1, E>0.015 MeV/n particles and electrons mixed. Magnetic field data include GSE and GSM cartesian components and direction angles. Plasma data, mainly from the MIT Faraday Cup, include flow velocity, density and temperature. Better sources exist for those desiring only IMP8 magnetic field and/or plasma data. Data are available as daily gzipped ASCII files; spin- integrated, 20.48s CPME count rates are also available with display and subset capability via FTPBrowser.

Additional information
Merge data set content and format

Content and detailed format of records of Merge data set

CPME and EPE home page at JHU/APL

Details of CPME and EPE instruments and data, including Merge data set

Acknowledgement

Please acknowledge Robert Decker, CPME PI and an architect of the IMP8 Merge data set, Donald Williams, EPE PI, Donald Mitchell, key EPE scientist, and Stamatios Krimigis, original CPME PI, all of JHU/APL, and also NSSDC and/or SPDF if accessing data via FTPBrowser or nssdcftp, or JHU/APL if accessing data from APL.

Contact
Role Person
1. Principal investigator Dr. Robert B. Decker Get XML
2. Principal investigator Dr. Donald J. Williams Get XML
3. General contact Dr. Stamatios M. Krimigis Get XML
4. General contact Dr. Natalia E. Papitashvili Get XML
Release date
2009-02-04 00:00:00
Repository
Name
SPDF Get XML
Availability
Online
Access rights
Open
URL
nssdcftp

gzipped ASCII daily files via ftp from NSSDC

ftp area at JHU/APL

gzipped ASCII daily files via ftp from JHU/APL

FTPBrowser

Plots and lists for CPME 20.48s spin-integrated count rates

Format
Text
Encoding
GZIP
File size
10 GB
Acknowledgement

Please acknowledge Robert Decker, CPME PI and an architect of the IMP8 Merge data set, Donald Williams, EPE PI, Donald Mitchell, key EPE scientist, and Stamatios Krimigis, original CPME PI, all of JHU/APL, and also NSSDC and/or SPDF if accessing data via FTPBrowser or nssdcftp, or JHU/APL if accessing data from APL.

Instruments
Charged Particle Measurements Experiment (CPME) Get XML
Energetic Protons and Electrons Get XML
IMP-8 Magnetic Field Experiment Get XML
IMP 8 Solar Plasma Faraday Cup Get XML
Measurement type
Energetic particles
Temporal description
Start date
1973-10-28 00:00:00
Stop date
2000-12-31 00:00:00
Cadence
20 seconds
Observed regions
Earth.Magnetosphere.Magnetotail
Heliosphere.NearEarth
Caveats

See http://sd-www.jhuapl.edu/IMP/data/imp8/epe/L1_330s/0000_Read_Me.txt for discussion on converting EPE counts to count rates and fluxes

↑

Parameters

Parameter #1

Name
Time
Description

Time tag of record, YYYY DOY HH MM SS

Structure
Size
5
Description

Time tag of record, YYYY DOY HH MM SS

Elements
Index Name Parameter key
1 Year Column 08
2 Day of Year Column 09
3 Hour Column 10
4 Minute Column 11
5 Second Column 12
Parameter type
Temporal

Parameter #2

Name
IMP8 location, GSE
Cadence
20 seconds
Units
km
Coordinate system
Cartesian GSE
Structure
Size
3
Description

Three cartesian components

Elements
Index Name Component Parameter key
1 GSE X component I Column13
2 GSE Y component J Column14
3 GSE Z component K Column15
Parameter type
Positional

Parameter #3

Name
IMP8 location, GSM
Cadence
20 seconds
Units
km
Coordinate system
Cartesian GSM
Structure
Size
3
Description

Three cartesian components

Elements
Index Name Component Parameter key
1 GSM X component I Column16
2 GSM Y component J Column17
3 GSM Z component K Column18
Parameter type
Positional

Parameter #4

Name
CPME Proton 20.48s spin-integrated count rates
Description

An array of ten CPME Proton 20.48s spin-integrated count rates

Cadence
20.48 seconds
Units
counts/sec
Structure
Size
10
Description

An array of ten CPME Proton 20.48s spin-integrated count rates. Indices 1-10 correspond to energy ranges 0.29-0.50 (P1), 0.50-0.96 (P2), 0.96-2.00 (P3), 2.4-4.6 (P4), 4.6-15.0 (P5), 15-25(P7), 25-48 (P8), 48-96 (P9), 96-145 (P10), 190-440 (P11) MeV, respectively.

Elements
Index Name Parameter key
1 P1 Column33
2 P2 Column34
3 P3 Column35
4 P4 Column36
5 P5 Column37
6 P7 Column39
7 P8 Column40
8 P9 Column41
9 P10 Column42
10 P11 Column43
Particle type
Proton
Quantity
Count rate
AtomicNumber
1
Energy range
Low energy
0.29
High energy
440
Units
MeV

Parameter #5

Name
CPME Alpha Particle 20.48s spin-integrated count rates
Description

An array of six CPME alpha particle 20.48s spin-integrated count rates

Cadence
20.48 seconds
Units
counts/sec
Structure
Size
6
Description

An array of six CPME alpha particle 20.48s spin-integrated count rates. Indices 1-6 correspond to energy ranges 0.59-1.14 (A1), 1.14-1.80 (A2), 1.8-4.2 (A3), 4.2-12 (A4), 12-28 (A5), 28-52 (A6) MeV/n, respectively.

Elements
Index Name Parameter key
1 A1 Column44
2 A2 Column45
3 A3 Column46
4 A4 Column47
5 A5 Column48
6 A6 Column49
Particle type
AlphaParticle
Quantity
Count rate
AtomicNumber
2
Energy range
Low energy
0.59
High energy
52
Units
MeV/n

Parameter #6

Name
CPME Z>=3 20.48s spin-integrated count rates
Description

An array of five CPME Z>=3 20.48s spin-integrated count rates

Cadence
20.48 seconds
Units
counts/sec
Structure
Size
5
Description

An array of five CPME Z>=3 20.48s spin-integrated count rates. Indices 1-5 correspond to energy ranges 0.70-1.45 (Z1-prime), 0.70-3.30 (Z1), 1.45-3.30 (Z2), 3.1-8.8 (Z3), 6-105 (Z4) MeV/n, respectively.

Elements
Index Name Parameter key
1 Z1-prime Column51
2 Z1 Column50
3 Z2 Column52
4 Z3 Column53
5 Z4 Column38
Particle type
Ion
Quantity
Count rate
Energy range
Low energy
0.70
High energy
105
Units
MeV/n

Parameter #7

Name
CPME electron 20.48s spin-integrated count rates
Description

An array of three CPME electron 20.48s spin-integrated count rates

Cadence
20.48 seconds
Units
counts/sec
Structure
Size
3
Description

An array of three CPME electron 20.48s spin-integrated count rates. Indices 1-3 correspond to energy ranges 0.22-2.50 (E1), 0.0.50-2.50 (E2), 0.80-2.50 (E3) MeV, respectively.

Elements
Index Name Parameter key
1 E1 Column54
2 E2 Column55
3 E3 Column56
Particle type
Electron
Quantity
Count rate
Energy range
Low energy
0.22
High energy
2.50
Units
MeV

Parameter #8

Name
CPME multi-species 20.48s spin-integrated count rates
Description

An array of two CPME multi-species (ions with Z>=1 and energy above 35 and 50 MeV/n, plus electrons) 20.48s spin-integrated count rates

Cadence
20.48 seconds
Units
counts/sec
Structure
Size
2
Description

An array of two CPME multi-species 20.48s spin-integrated count rates. Indices 1-2 correspond to energy ranges >35 MeV/n (M) and >50 MeV/n (S), respectively.

Elements
Index Name Parameter key
1 M Column57
2 S Column58
Particle type
Ion
Quantity
Count rate
Energy range
Low energy
35
High energy
1000
Units
MeV/n

Parameter #9

Name
uncertainties in preceding 26 20.48s, spin-integrated count rates
Description

Poisson uncertainties in the preceding 26 20.48s, spin-integrated count rates.

Caveats

These are given in columns 59-84 in the sequence of the column numbers given above for of the various rates and not in the sequence in which the rates are given above.

Cadence
20.48 seconds
Units
counts/sec
Structure
Size
26
Description

Poisson uncertainties for 20.48s spin-integrated rates

Particle type
Proton
AlphaParticle
Electron
Ion
Quantity
Count rate

Parameter #10

Name
CPME Proton 10.24s spin-integrated count rates, first half of interval
Description

An array of three CPME Proton 10.24s spin-integrated count rates taken during the first half of this 20.48s interval

Cadence
10.24 seconds
Units
counts/sec
Structure
Size
3
Description

An array of three CPME Proton 10.24s spin-integrated count rates. Indices 1-3 correspond to energy ranges 0.29-0.50 (P1), 0.50-0.96 (P2), 0.96-2.00 (P3) MeV, respectively.

Elements
Index Name Parameter key
1 P1 Column111
2 P2 Column112
3 P3 Column113
Particle type
Proton
Quantity
Count rate
AtomicNumber
1
Energy range
Low energy
0.29
High energy
2.0
Units
MeV

Parameter #11

Name
CPME Electron 10.24s spin-integrated count rates, first half of interval
Description

An array of three CPME electron 10.24s spin-integrated count rates taken during the first half of this 20.48s interval

Cadence
10.24 seconds
Units
counts/sec
Structure
Size
3
Description

An array of three CPME electron 10.24s spin-integrated count rates. Indices 1-3 correspond to energy ranges 0.22-2.50 (E1), 0.50-2.50 (E2), 0.80-2.50 (E3) MeV, respectively.

Elements
Index Name Parameter key
1 E1 Column114
2 E2 Column115
3 E3 Column116
Particle type
Electron
Quantity
Count rate
Energy range
Low energy
0.22
High energy
2.5
Units
MeV

Parameter #12

Name
uncertainties in preceding 6 10.24s, spin-integrated count rates
Description

Poisson uncertainties in the preceding 6 10.24s proton and electron, spin-integrated count rates obtained during the first half of this 20.48s interval.

Caveats

These are given in columns 117-122 in the sequence in which the rates are given above.

Cadence
10.24 seconds
Units
counts/sec
Structure
Size
26
Description

Poisson uncertainties for 10.24s spin-integrated rates obtained during the first half of this 20.48s interval

Particle type
Proton
Electron
Quantity
Count rate

Parameter #13

Name
Data quality flags in preceding 6 10.24s, spin-integrated count rates
Description

Data quality flags in the preceding 6 10.24s proton and electron, spin-integrated count rates obtained during the first half of this 20.48s interval.

Caveats

These are given in columns 123-128 in the sequence in which the rates are given above.

Cadence
10.24 seconds
Structure
Size
6
Description

Data quality flags for 10.24s spin-integrated rates obtained during the first half of this 20.48s interval

Parameter type
Other

Parameter #14

Name
CPME Proton 10.24s spin-integrated count rates, second half of interval
Description

An array of three CPME Proton 10.24s spin-integrated count rates taken during the second half of this 20.48s interval

Cadence
10.24 seconds
Units
counts/sec
Structure
Size
3
Description

An array of three CPME Proton 10.24s spin-integrated count rates. Indices 1-3 correspond to energy ranges 0.29-0.50 (P1), 0.50-0.96 (P2), 0.96-2.00 (P3) MeV, respectively.

Elements
Index Name Parameter key
1 P1 Column129
2 P2 Column130
3 P3 Column131
Particle type
Proton
Quantity
Count rate
AtomicNumber
1
Energy range
Low energy
0.29
High energy
2.0
Units
MeV

Parameter #15

Name
CPME Electron 10.24s spin-integrated count rates, second half of interval
Description

An array of three CPME electron 10.24s spin-integrated count rates taken during the second half of this 20.48s interval

Cadence
10.24 seconds
Units
counts/sec
Structure
Size
3
Description

An array of three CPME electron 10.24s spin-integrated count rates. Indices 1-3 correspond to energy ranges 0.22-2.50 (E1), 0.50-2.50 (E2), 0.80-2.50 (E3) MeV, respectively.

Elements
Index Name Parameter key
1 E1 Column132
2 E2 Column133
3 E3 Column134
Particle type
Electron
Quantity
Count rate
Energy range
Low energy
0.22
High energy
2.5
Units
MeV

Parameter #16

Name
uncertainties in preceding 6 10.24s, spin-integrated count rates
Description

Poisson uncertainties in the preceding 6 10.24s proton and electron, spin-integrated count rates obtained during the second half of this 20.48s interval.

Caveats

These are given in columns 135-140 in the sequence in which the rates are given above.

Cadence
10.24 seconds
Units
counts/sec
Structure
Size
26
Description

Poisson uncertainties for 10.24s spin-integrated rates obtained during the second half of this 20.48s interval

Particle type
Proton
Electron
Quantity
Count rate

Parameter #17

Name
Data quality flags in preceding 6 10.24s, spin-integrated count rates
Description

Data quality flags in the preceding 6 10.24s proton and electron, spin-integrated count rates obtained during the second half of this 20.48s interval.

Caveats

These are given in columns 141-146 in the sequence in which the rates are given above.

Cadence
10.24 seconds
Structure
Size
6
Description

Data quality flags for 10.24s spin-integrated rates obtained during the second half of this 20.48s interval

Parameter type
Other

Parameter #18

Name
CPME 0.29-0.50 MeV Proton 10.24s 8-sectored count rates, first half of interval
Description

An array of eight 0.29-0.50 MeV proton count rates, in 8 equal azimuthal sectors, in the first half of this interval.

Cadence
10.24 seconds
Units
counts/sec
Structure
Size
8
Description

An array of eight 0.29-0.50 MeV proton count rates, in 8 equal azimuthal sectors, in the first half of this interval.

Elements
Index Name Parameter key
1 Count rate for sector 1 Column147
2 Count rate for sector 2 Column148
3 Count rate for sector 3 Column149
4 Count rate for sector 4 Column150
5 Count rate for sector 5 Column151
6 Count rate for sector 6 Column152
7 Count rate for sector 7 Column153
8 Count rate for sector 8 Column154
Particle type
Proton
Quantity
Count rate
AtomicNumber
1
Energy range
Low energy
0.29
High energy
0.50
Units
MeV

Parameter #19

Name
Uncertainties in preceding 8-sectored proton count rates
Description

An array of eight Poisson uncertainties associated with preceding eight sectored proton count rates, first half of interval

Cadence
10.24 seconds
Units
Counts/sec
Structure
Size
8
Description

Poisson uncertainties associated with preceding proton count rates

Particle type
Proton
Quantity
Count rate
AtomicNumber
1
Energy range
Low energy
0.29
High energy
0.50
Units
MeV

Parameter #20

Name
Data quality flag for preceding 8 sectored rates
Parameter key
Column163
Description

Composite data quality flag for the preceding 8 sectored rates

Cadence
10.24 seconds
Parameter type
Other

Parameter #21

Name
CPME 0.29-0.50 MeV Proton 10.24s 8-sectored count rates, second half of interval
Description

An array of eight 0.29-0.50 MeV proton count rates, in 8 equal azimuthal sectors, in the second half of this interval.

Cadence
10.24 seconds
Units
counts/sec
Structure
Size
8
Description

An array of eight 0.29-0.50 MeV proton count rates, in 8 equal azimuthal sectors, in the second half of this interval.

Elements
Index Name Parameter key
1 Count rate for sector 1 Column164
2 Count rate for sector 2 Column165
3 Count rate for sector 3 Column166
4 Count rate for sector 4 Column167
5 Count rate for sector 5 Column168
6 Count rate for sector 6 Column169
7 Count rate for sector 7 Column170
8 Count rate for sector 8 Column171
Particle type
Proton
Quantity
Count rate
AtomicNumber
1
Energy range
Low energy
0.29
High energy
0.50
Units
MeV

Parameter #22

Name
Uncertainties in preceding 8-sectored proton count rates
Description

An array of eight Poisson uncertainties associated with preceding eight sectored proton count rates, second half of interval

Cadence
10.24 seconds
Units
Counts/sec
Structure
Size
8
Description

Poisson uncertainties associated with preceding proton count rates

Particle type
Proton
Quantity
Count rate
AtomicNumber
1
Energy range
Low energy
0.29
High energy
0.50
Units
MeV

Parameter #23

Name
Data quality flag for preceding 8 sectored rates
Parameter key
Column180
Description

Composite data quality flag for the preceding 8 sectored rates, second half of interval

Cadence
10.24 seconds
Parameter type
Other

Parameter #24

Name
CPME 0.22-2.5 MeV Electron 10.24s 8-sectored count rates, first half of interval
Description

An array of eight 0.22-2.5 MeV electron count rates, in 8 equal azimuthal sectors, in the first half of this interval.

Cadence
10.24 seconds
Units
counts/sec
Structure
Size
8
Description

An array of eight 0.22-2.50 MeV electron count rates, in 8 equal azimuthal sectors, in the first half of this interval.

Elements
Index Name Parameter key
1 Count rate for sector 1 Column181
2 Count rate for sector 2 Column182
3 Count rate for sector 3 Column183
4 Count rate for sector 4 Column184
5 Count rate for sector 5 Column185
6 Count rate for sector 6 Column186
7 Count rate for sector 7 Column187
8 Count rate for sector 8 Column188
Particle type
Electron
Quantity
Count rate
Energy range
Low energy
0.22
High energy
2.5
Units
MeV

Parameter #25

Name
Uncertainties in preceding 8-sectored electron count rates
Description

An array of eight Poisson uncertainties associated with preceding eight sectored electron count rates, first half of interval

Cadence
10.24 seconds
Units
Counts/sec
Structure
Size
8
Description

Poisson uncertainties associated with preceding electron count rates

Particle type
Electron
Quantity
Count rate
Energy range
Low energy
0.22
High energy
2.5
Units
MeV

Parameter #26

Name
Data quality flag for preceding 8 sectored rates
Parameter key
Column197
Description

Composite data quality flag for the preceding 8 sectored rates

Cadence
10.24 seconds
Parameter type
Other

Parameter #27

Name
CPME 0.22-2.5 MeV Electron 10.24s 8-sectored count rates, second half of interval
Description

An array of eight 0.22-2.5 MeV electron count rates, in 8 equal azimuthal sectors, in the second half of this interval.

Cadence
10.24 seconds
Units
counts/sec
Structure
Size
8
Description

An array of eight 0.22-2.5 MeV electon count rates, in 8 equal azimuthal sectors, in the second half of this interval.

Elements
Index Name Parameter key
1 Count rate for sector 1 Column198
2 Count rate for sector 2 Column199
3 Count rate for sector 3 Column200
4 Count rate for sector 4 Column201
5 Count rate for sector 5 Column202
6 Count rate for sector 6 Column203
7 Count rate for sector 7 Column204
8 Count rate for sector 8 Column205
Particle type
Electron
Quantity
Count rate
Energy range
Low energy
0.22
High energy
2.5
Units
MeV

Parameter #28

Name
Uncertainties in preceding 8-sectored electron count rates
Description

An array of eight Poisson uncertainties associated with preceding eight sectored electon count rates, second half of interval

Cadence
10.24 seconds
Units
Counts/sec
Structure
Size
8
Description

Poisson uncertainties associated with preceding electon count rates

Particle type
Electron
Quantity
Count rate
Energy range
Low energy
0.22
High energy
2.5
Units
MeV/n

Parameter #29

Name
Data quality flag for preceding 8 sectored rates
Parameter key
Column214
Description

Composite data quality flag for the preceding 8 sectored rates, second half of interval

Cadence
10.24 seconds
Parameter type
Other

Parameter #30

Name
CPME 0.59-1.14 MeV/n alpha particle 20.48s 8-sectored count rates
Description

An array of eight 0.59-1.14 MeV/n alpha particle count rates, in 8 equal azimuthal sectors.

Cadence
20.48 seconds
Units
counts/sec
Structure
Size
8
Description

An array of eight 0.59-1.14 MeV/n alpha particle count rates, in 8 equal azimuthal sectors.

Elements
Index Name Parameter key
1 Count rate for sector 1 Column215
2 Count rate for sector 2 Column216
3 Count rate for sector 3 Column217
4 Count rate for sector 4 Column218
5 Count rate for sector 5 Column219
6 Count rate for sector 6 Column220
7 Count rate for sector 7 Column221
8 Count rate for sector 8 Column222
Particle type
AlphaParticle
Quantity
Count rate
Energy range
Low energy
0.59
High energy
1.14
Units
MeV/n

Parameter #31

Name
Uncertainties in preceding 8-sectored alpha particle count rates
Description

An array of eight Poisson uncertainties associated with preceding eight sectored alpha particle count rates

Cadence
20.48 seconds
Units
Counts/sec
Structure
Size
8
Description

Poisson uncertainties associated with preceding alpha particle count rates

Particle type
AlphaParticle
Quantity
Count rate
Energy range
Low energy
0.59
High energy
1.14
Units
MeV/n

Parameter #32

Name
Data quality flag for preceding 8 sectored rates
Parameter key
Column231
Description

Composite data quality flag for the preceding 8 sectored rates

Cadence
20.48 seconds
Parameter type
Other

Parameter #33

Name
CPME 1.8-4.2 MeV/n alpha particle 20.48s 8-sectored count rates
Description

An array of eight 1.8-4.2 MeV/n alpha particle count rates, in 8 equal azimuthal sectors.

Cadence
20.48 seconds
Units
counts/sec
Structure
Size
8
Description

An array of eight 1.8-4.2 MeV/n alpha particle count rates, in 8 equal azimuthal sectors.

Elements
Index Name Parameter key
1 Count rate for sector 1 Column232
2 Count rate for sector 2 Column233
3 Count rate for sector 3 Column234
4 Count rate for sector 4 Column235
5 Count rate for sector 5 Column236
6 Count rate for sector 6 Column237
7 Count rate for sector 7 Column238
8 Count rate for sector 8 Column239
Particle type
AlphaParticle
Quantity
Count rate
Energy range
Low energy
1.8
High energy
4.2
Units
MeV/n

Parameter #34

Name
Uncertainties in preceding 8-sectored alpha particle count rates
Description

An array of eight Poisson uncertainties associated with preceding eight sectored alpha particle count rates

Cadence
20.48 seconds
Units
Counts/sec
Structure
Size
8
Description

Poisson uncertainties associated with preceding alpha particle count rates

Particle type
AlphaParticle
Quantity
Count rate
Energy range
Low energy
1.8
High energy
4.2
Units
MeV/n

Parameter #35

Name
Data quality flag for preceding 8 sectored rates
Parameter key
Column248
Description

Composite data quality flag for the preceding 8 sectored rates

Cadence
20.48 seconds
Parameter type
Other

Parameter #36

Name
CPME 0.7-3.3 MeV/n Z>=3 ions 20.48s 8-sectored count rates
Description

An array of eight 0.7-3.3 MeV/n Z>=3 ion count rates, in 8 equal azimuthal sectors.

Cadence
20.48 seconds
Units
counts/sec
Structure
Size
8
Description

An array of eight 0.7-3.3 MeV/n Z>=3 ion count rates, in 8 equal azimuthal sectors.

Elements
Index Name Parameter key
1 Count rate for sector 1 Column249
2 Count rate for sector 2 Column250
3 Count rate for sector 3 Column251
4 Count rate for sector 4 Column252
5 Count rate for sector 5 Column253
6 Count rate for sector 6 Column254
7 Count rate for sector 7 Column255
8 Count rate for sector 8 Column256
Particle type
Ion
Quantity
Count rate
Energy range
Low energy
0.7
High energy
3.3
Units
MeV/n

Parameter #37

Name
Uncertainties in preceding 8-sectored Z>=3 ion count rates
Description

An array of eight Poisson uncertainties associated with preceding eight sectored Z>=3 ion count rates

Cadence
20.48 seconds
Units
Counts/sec
Structure
Size
8
Description

Poisson uncertainties associated with preceding Z>=3 ion count rates

Particle type
Ion
Quantity
Count rate
Energy range
Low energy
0.7
High energy
3.3
Units
MeV/n

Parameter #38

Name
Data quality flag for preceding 8 sectored rates
Parameter key
Column265
Description

Composite data quality flag for the preceding 8 sectored rates

Cadence
20.48 seconds
Parameter type
Other

Parameter #39

Name
CPME 1.45-3.3 MeV/n Z>=3 ions 20.48s 8-sectored count rates
Description

An array of eight 1.45-3.3 MeV/n Z>=3 ion count rates, in 8 equal azimuthal sectors.

Cadence
20.48 seconds
Units
counts/sec
Structure
Size
8
Description

An array of eight 1.45-3.3 MeV/n Z>=3 ion count rates, in 8 equal azimuthal sectors.

Elements
Index Name Parameter key
1 Count rate for sector 1 Column266
2 Count rate for sector 2 Column267
3 Count rate for sector 3 Column268
4 Count rate for sector 4 Column269
5 Count rate for sector 5 Column270
6 Count rate for sector 6 Column271
7 Count rate for sector 7 Column272
8 Count rate for sector 8 Column273
Particle type
Ion
Quantity
Count rate
Energy range
Low energy
1.45
High energy
3.3
Units
MeV/n

Parameter #40

Name
Uncertainties in preceding 8-sectored Z>=3 ion count rates
Description

An array of eight Poisson uncertainties associated with preceding eight sectored Z>=3 ion count rates

Cadence
20.48 seconds
Units
Counts/sec
Structure
Size
8
Description

Poisson uncertainties associated with preceding Z>=3 ion count rates

Particle type
Ion
Quantity
Count rate
Energy range
Low energy
1.45
High energy
3.3
Units
MeV/n

Parameter #41

Name
Data quality flag for preceding 8 sectored rates
Parameter key
Column282
Description

Composite data quality flag for the preceding 8 sectored rates

Cadence
20.48 seconds
Parameter type
Other

Parameter #42

Name
EPE 20.48s, 50-220 keV/n ion counts in 16 sectors
Description

Counts accumulated over 20.48s for 50-220 keV/n ions in 16 azimuthal sectors

Cadence
20.48 seconds
Units
Counts
Structure
Size
16
Description

An array of 16 sectored counts for Z>=1 ions of 50-220 keV/n

Elements
Index Name Parameter key
1 Counts for sector 1 Column325
2 Counts for sector 2 Column326
3 Counts for sector 3 Column327
4 Counts for sector 4 Column328
5 Counts for sector 5 Column329
6 Counts for sector 6 Column330
7 Counts for sector 7 Column331
8 Counts for sector 8 Column332
9 Counts for sector 9 Column333
10 Counts for sector 10 Column334
11 Counts for sector 11 Column335
12 Counts for sector 12 Column336
13 Counts for sector 13 Column337
14 Counts for sector 14 Column338
15 Counts for sector 15 Column339
16 Counts for sector 16 Column340
Particle type
Ion
Quantity
Counts
Energy range
Low energy
50
High energy
220
Units
keV/n

Parameter #43

Name
EPE 20.48s, 0.22-0.80 MeV/n ion counts in 16 sectors
Description

Counts accumulated over 20.48s for 0.22-0.80 MeV/n ions in 16 azimuthal sectors

Cadence
20.48 seconds
Units
Counts
Structure
Size
16
Description

An array of 16 sectored counts for Z>=1 ions of 0.22-0.80 MeV/n

Elements
Index Name Parameter key
1 Counts for sector 1 Column341
2 Counts for sector 2 Column342
3 Counts for sector 3 Column343
4 Counts for sector 4 Column344
5 Counts for sector 5 Column345
6 Counts for sector 6 Column346
7 Counts for sector 7 Column347
8 Counts for sector 8 Column348
9 Counts for sector 9 Column349
10 Counts for sector 10 Column350
11 Counts for sector 11 Column351
12 Counts for sector 12 Column352
13 Counts for sector 13 Column353
14 Counts for sector 14 Column354
15 Counts for sector 15 Column355
16 Counts for sector 16 Column356
Particle type
Ion
Quantity
Counts
Energy range
Low energy
0.22
High energy
0.80
Units
MeV/n

Parameter #44

Name
EPE 20.48s, >15 keV/n ion and electron counts in 16 sectors
Description

Counts accumulated over 20.48s for a mix of >15 keV/n ions and electrons in 16 azimuthal sectors. These are the F counts.

Caveats

The sequence of the last three groups of sectored EPE counts are changed in going from 1989 to 1990. They are as given in this description for 1990 and later, that is, F, then L7, then L8. But for 1973-1989, the sequence if L7, then L8, then F. The "parameter keys" (column numbers) must be adjusted for 1973-1989.

Cadence
20.48 seconds
Units
Counts
Structure
Size
16
Description

An array of 16 sectored counts for Z>=1 ions and electrons of >15 keV/n

Elements
Index Name Parameter key
1 Counts for sector 1 Column357
2 Counts for sector 2 Column358
3 Counts for sector 3 Column359
4 Counts for sector 4 Column360
5 Counts for sector 5 Column361
6 Counts for sector 6 Column362
7 Counts for sector 7 Column363
8 Counts for sector 8 Column364
9 Counts for sector 9 Column365
10 Counts for sector 10 Column366
11 Counts for sector 11 Column367
12 Counts for sector 12 Column368
13 Counts for sector 13 Column369
14 Counts for sector 14 Column370
15 Counts for sector 15 Column371
16 Counts for sector 16 Column372
Particle type
Ion
Electron
Quantity
Counts
Energy range
Low energy
15
High energy
INF
Units
keV/n

Parameter #45

Name
EPE 20.48s, 30-100 keV electron counts in 16 sectors
Description

Counts accumulated over 20.48s for 30-100 keV electrons in 16 azimuthal sectors. These are the L7 counts.

Caveats

The sequence of the last three groups of sectored EPE counts are changed in going from 1989 to 1990. They are as given in this description for 1990 and later, that is, F, then L7, then L8. But for 1973-1989, the sequence if L7, then L8, then F. The "parameter keys" (column numbers) must be adjusted for 1973-1989.

Cadence
20.48 seconds
Units
Counts
Structure
Size
16
Description

An array of 16 sectored counts for 30-100 keV electrons

Elements
Index Name Parameter key
1 Counts for sector 1 Column373
2 Counts for sector 2 Column374
3 Counts for sector 3 Column375
4 Counts for sector 4 Column376
5 Counts for sector 5 Column377
6 Counts for sector 6 Column378
7 Counts for sector 7 Column379
8 Counts for sector 8 Column380
9 Counts for sector 9 Column381
10 Counts for sector 10 Column382
11 Counts for sector 11 Column383
12 Counts for sector 12 Column384
13 Counts for sector 13 Column385
14 Counts for sector 14 Column386
15 Counts for sector 15 Column387
16 Counts for sector 16 Column388
Particle type
Electron
Quantity
Counts
Energy range
Low energy
30
High energy
100
Units
keV

Parameter #46

Name
EPE 20.48s, 100=200 keV electron counts in 16 sectors
Description

Counts accumulated over 20.48s for 100-200 keV electrons in 16 azimuthal sectors. These are the L8 counts.

Caveats

The sequence of the last three groups of sectored EPE counts are changed in going from 1989 to 1990. They are as given in this description for 1990 and later, that is, F, then L7, then L8. But for 1973-1989, the sequence if L7, then L8, then F. The "parameter keys" (column numbers) must be adjusted for 1973-1989.

Cadence
20.48 seconds
Units
Counts
Structure
Size
16
Description

An array of 16 sectored counts for 100-200 keV electrons

Elements
Index Name Parameter key
1 Counts for sector 1 Column389
2 Counts for sector 2 Column390
3 Counts for sector 3 Column391
4 Counts for sector 4 Column392
5 Counts for sector 5 Column393
6 Counts for sector 6 Column394
7 Counts for sector 7 Column395
8 Counts for sector 8 Column396
9 Counts for sector 9 Column397
10 Counts for sector 10 Column398
11 Counts for sector 11 Column399
12 Counts for sector 12 Column400
13 Counts for sector 13 Column401
14 Counts for sector 14 Column402
15 Counts for sector 15 Column403
16 Counts for sector 16 Column404
Particle type
Electron
Quantity
Counts
Energy range
Low energy
100
High energy
200
Units
keV

Parameter #47

Name
Magnetic field vector, GSE
Description

A 20.48s magnetic field vector created at JHU/APL by weighted averages over 15.36-s values (which are also contained in data set). In GSE cartesian components.

Cadence
20.48 seconds
Units
nT
Coordinate system
Cartesian GSE
Structure
Size
3
Description

An array of 3 Cartesian components

Elements
Index Name Component Parameter key
1 Bx(GSE) I Column285
2 By(GSE) J Column286
3 Bz(GSE) K Column287
Quantity
Magnetic field
Qualifier
Average

Parameter #48

Name
Magnetic field vector, GSE
Description

A 20.48s magnetic field vector created at JHU/APL by weighted averages over 15.36-s values (which are also contained in data set). In GSM cartesian components.

Cadence
20.48 seconds
Units
nT
Coordinate system
Cartesian GSM
Structure
Size
3
Description

An array of 3 Cartesian components

Elements
Index Name Component Parameter key
1 Bx(GSM) I Column298
2 By(GSM) J Column299
3 Bz(GSM) K Column300
Quantity
Magnetic field
Qualifier
Average
Vector

Parameter #49

Name
Solar wind flow speed
Parameter key
Column409
Description

Solar wind flow speed, given at 20.48s resolution, but from input data of ~1min resolution

Cadence
20.48 seconds
Units
km/s
Particle type
Proton
Quantity
Flow speed

Parameter #50

Name
Solar wind proton temperature
Parameter key
Column410
Description

Solar wind proton temperature, given at 20.48s resolution, but from input data of ~1min resolution

Cadence
20.48 seconds
Units
degK
Particle type
Proton
Quantity
Temperature

Parameter #51

Name
Solar wind proton density
Parameter key
Column411
Description

Solar wind proton density, given at 20.48s resolution, but from input data of ~1min resolution

Cadence
20.48 seconds
Units
number/cc
Particle type
Proton
Quantity
Number density

Parameter #52

Name
Solar wind flow latitude
Parameter key
Column412
Description

Solar wind flow latitude, given at 20.48s resolution, but from input data of ~1min resolution

Cadence
20.48 seconds
Units
deg
Particle type
Proton
Quantity
Velocity
Qualifier
Elevation angle

Parameter #53

Name
Solar wind flow longitude
Parameter key
Column413
Description

Solar wind flow longitude, given at 20.48s resolution, but from input data of ~1min resolution

Cadence
20.48 seconds
Units
deg
Particle type
Proton
Quantity
Velocity
Qualifier
Azimuth angle
↑

SPASE version 2.0.0

Instrument: Charged Particle Measurements Experiment (CPME)

Instrument ID
spase://SMWG/Instrument/IMP8/CPME Get XML
Name
Charged Particle Measurements Experiment (CPME)
Alternate name
CPME
Description

Three solid-state detectors in an anticoincidence plastic scintillator observed electrons between 0.2 and 2.5 MeV; protons between 0.3 and 500 MeV; alpha particles between 2.0 and 200 MeV; heavy particles with Z values ranging from 2 to 5 with energies greater than 8 MeV; heavy particles with Z values ranging between 6 and 8 with energies greater than 32 MeV; and integral protons and alphas of energies greater than 50 MeV/nucleon, all with dynamic ranges of 1 to 1E+6 particles per (sq cm-s-sr). Five thin-window Geiger-Mueller tubes observed electrons of energy greater than 15 keV, protons of energy greater than 250 keV, and X rays with wavelengths between 2 and 10 A, all with a dynamic range of 10 to 1E+8 per (sq cm-s-sr). Particles and X rays, primarily of solar origin, were studied, but the dynamic range and resolution of the instrument also permitted observation of cosmic rays and magnetotail particles. For further details, see T. P. Armstrong et al., J. Geophys. Res., v. 83, p. 5198, 1978.

Additional information
NSSDC's Master Catalog

Information about the Charged Particle Measurements Experiment (CPME) experiment on the IMP-J mission.

Contact
Role Person
1. Principal investigator Dr. Robert B. Decker Get XML
Release date
2009-05-20 21:10:02
Instrument type
Energetic Particle Instrument
Investigation name
Charged Particle Measurements Experiment (CPME) on IMP-J
Observatory
IMP 8 Get XML
↑

SPASE version 2.0.0

Instrument: Energetic Protons and Electrons

Instrument ID
spase://SMWG/Instrument/IMP8/EPE Get XML
Name
Energetic Protons and Electrons
Alternate name
Energetic Electrons and Protons
Description

The purposes of this investigation were (1) to study the propagation characteristics of solar cosmic rays through the interplanetary medium over the energy ranges indicated below, (2) to study electron and proton fluxes throughout the geomagnetic tail and near the flanks of the magnetosphere, and (3) to study the entry of solar cosmic rays into the magnetosphere. The instrumentation consisted of a three-element telescope employing fully depleted surface-barrier solid-state detectors and a magnet to deflect electrons. Two side-mounted detectors were used to measure the deflected electrons. Two additional detectors in separate mounts were used to measure charged particles above 15 keV (F), Z greater than or equal to 2 above 0.6 MeV (G1) and above 1.0 MeV (G2), and Z greater than or equal to 3 above 2.0 MeV (G3). The telescope measured protons in three ranges between 2.1 and 25 MeV (14, 15, 16); Z greater than or equal to 1 in three ranges between 0.05 and 2.1 MeV (11, 12, 13); alpha particles between 8.4 and 35.0 MeV in two ranges (111, 112); Z greater than or equal to 2 between 2.2 and 8.4 MeV (110); and a background channel (19). Deflected electrons were measured in two ranges between 30 and 200 keV (17, 18). A complete description of the instrument was given by D. J. Williams in NOAA Technical Report ERL 393-SEL 40, October 1977.

Additional information
NSSDC's Master Catalog

Information about the Energetic Electrons and Protons experiment on the IMP-J mission.

Contact
Role Person
1. Principal investigator Dr. Donald J. Williams Get XML
Release date
2009-05-20 21:10:02
Prior ID
spase://SMWG/Instrument/IMP8/EEP
Instrument type
Energetic Particle Instrument
Investigation name
Energetic Electrons and Protons on IMP-J
Observatory
IMP 8 Get XML
↑

SPASE version 2.0.0

Instrument: IMP-8 Magnetic Field Experiment

Instrument ID
spase://SMWG/Instrument/IMP8/MAG Get XML
Name
IMP-8 Magnetic Field Experiment
Alternate name
IMP8 MAG
Description

The magnetic field experiment on the IMP-8 spacecraft utilizes a tri-axial fluxgate (saturable inductor) magnetometer. The instrument originally had three, automatically determined, ranges, ±12 nT, ±36 nT, and ±108 nT, full scale. Because of a range-change circuit failure occurring in early July 1975, the experiment was commanded into a fixed ±36 nT range on July 11, 1975 at 12:55:09 UT and has been in that range ever since. The measurements are A-to-D converted onboard, to an 8-bit resolution, yielding ±0.14 nT quantization sensitivity, which is larger than the intrinsic sensor noise level of 0.025 nT RMS. The data from the two-bit (per component) adaptive delta modulator, incorporated into the instrument, and applied to the intrinsic sample rate of 25 vectors/sec., was never utilized, and hence the rate of the full (8-bit) vector words, which occur every 320 ms, represents the effective sample period of the instrument. The sampling rate is synchronized to the spacecraft clock; the basic spacecraft clock frequency is 6.4 kHz. The sensor unit is mounted on the end of a boom approximately 4 m from the center of the spacecraft.

Additional information
IMP-8 Magnetometer Home Page

A web site hosting IMP-8 magnetic experiment instrument information as well as web utilities for plotting and downloading data.

NSSDC's Master Catalog

Information about the Magnetic Field Experiment experiment on the IMP 8 mission.

Acknowledgement

User will acknowledge the IMP-8 magnetometer team in any publication resulting from the use of these data.

Contact
Role Person
1. Principal investigator Dr. Adam Szabo Get XML
Release date
2009-05-20 21:10:02
Instrument type
Magnetometer
Investigation name
Magnetic Field Experiment
Observatory
IMP 8 Get XML
Caveats
↑

SPASE version 2.0.0

Instrument: IMP 8 Solar Plasma Faraday Cup

Instrument ID
spase://SMWG/Instrument/IMP8/PLS Get XML
Name
IMP 8 Solar Plasma Faraday Cup
Alternate name
IMP 8 PLS
IMP 8 PLA
1973-078A-02
Description

A modulated split-collector Faraday cup, perpendicular to the spacecraft spin axis, was used to study the directional intensity of positive ions and electrons in the solar wind, transition region, and magnetotail. The collector plate split is perpendicular to the spacecraft spin axis in order to measure the flow angle of the ions in a meridional plane; the flow angle in the spacecraft equatorial plane is determined from the fluxes measured as the spacecraft rotates.

Electrons are measured using 21 logarithmically-spaced energy windows covering the energy/charge range between 23 and 1935 volts. Positive ions are studied using 24 energy windows covering the range between 50 and 7000 volts.

The instrument has three operating modes. The tracking mode yields the best time resolution which is about 1 minute. A single energy window is used during a spacecraft rotation. The ion spectrum is obtained in eight spacecraft revolutions using a subset of the energy windows that track the peak of the solar wind. In this mode, fluxes are measured during 11.25-degree sectors of the spacecraft spin while the instrument is looking within the 90 degree sector centered on the sun direction and during 45 degree sectors for the remainder of the rotation. The other modes yield a spectrum using all 24 windows (with the same angular sectors described above) or a spectrum that results from integrating the observed fluxes over 45 degree sectors for the entire spacecraft rotation.

Electron data are obtained in all modes, but are not usually analyzed.

Parameters derived on a routine basis are proton velocity, number density, and temperature (most probable thermal speed). Those parameters are obtained from a non-linear, least-squares fit to the observed fluxes using a convected, isotropic Maxwellian model.

Key Parameters for the Plasma instrument are computed at MIT using Level Zero data that are staged to the ISTP/CDHF approximately two weeks after being received on Earth. Thus the plasma instrument's Key Parameters lag real time by something greater than 2 weeks, but less than four.

Additional information
IMP 8 Home Page
NSSDC's Master Catalog

Information about the Solar Plasma Faraday Cup experiment on the IMP-J mission.

Contact
Role Person
1. Principal investigator Dr. Alan J. Lazarus Get XML
Release date
2009-05-20 21:10:02
Prior ID
spase://SMWG/instrument/1973-078A-02
Instrument type
Faraday Cup
Investigation name
Solar Plasma Faraday Cup on IMP-J
Observatory
IMP 8 Get XML
↑

SPASE version 2.0.0

Observatory: IMP 8

Observatory ID
spase://SMWG/Observatory/IMP8 Get XML
Name
IMP 8
Alternate name
IMP-J
Explorer 50
1973-078A
Description

IMP 8 (IMP-J or Explorer 50), the last satellite of the IMP series, was a drum-shaped spacecraft, 135.6 cm across and 157.4 cm high, instrumented for interplanetary and magnetotail studies of cosmic rays, energetic solar particles, plasma, and electric and magnetic fields. Its initial orbit was more elliptical than intended, with apogee and perigee distances of about 45 and 25 earth radii. Its eccentricity decreased after launch. Its orbital inclination varied between 0 deg and about 55 deg with a periodicity of several years. The spacecraft spin axis was normal to the ecliptic plane, and the spin rate was 23 rpm. The data telemetry rate was 1600 bps.

The spacecraft was in the solar wind for 7 to 8 days of every 12.5 day orbit. Telemetry coverage was 90% in the early years, but only 60-70% through most of the 1980's and early 1990's. Coverage returned to the 90% range in the mid to late 1990's.

The objectives of the extended IMP-8 operations were to provide solar wind parameters as input for magnetospheric studies and as a 1-AU baseline for deep space studies, and to continue solar cycle variation studies with a single set of well-calibrated and understood instruments.

In October, 2001, IMP 8 was terminated as an independent mission. Telemetry acquisition resumed after about three months at Canberra only (30-50% coverage), as an adjunct to the Voyager and Ulysses missions. As of August 2005 IMP 8 continued in this mode.

Additional information
IMP-8 Project Information
NSSDC's Master Catalog

Information about the IMP-J mission

Contact
Role Person
1. Project scientist Dr. Robert E. McGuire Get XML
Release date
2009-05-20 20:00:12
Prior ID
spase://vspo/observatory/63
Observatory group
IMP
Location
Region
Earth.Magnetosheath
Earth.Magnetosphere.Magnetotail
Heliosphere.NearEarth
↑

SPASE version 2.0.0

Person: Dr. Robert B. Decker

Name
Dr. Robert B. Decker
Organization
Applied Physics Laboratory
Person ID
spase://SMWG/Person/Robert.B.Decker Get XML
↑

SPASE version 2.0.0

Person: Dr. Donald J. Williams

Name
Dr. Donald J. Williams
Organization
Applied Physics Laboratory
Person ID
spase://SMWG/Person/Donald.J.Williams Get XML
↑

SPASE version 2.0.0

Person: Dr. Stamatios M. Krimigis

Name
Dr. Stamatios M. Krimigis
Organization
Applied Physics Laboratory
Person ID
spase://SMWG/Person/Stamatios.M.Krimigis Get XML
↑

SPASE version 2.0.0

Person: Dr. Natalia E. Papitashvili

Name
Dr. Natalia E. Papitashvili
Organization
GSFC-Code 612.4
Person ID
spase://SMWG/Person/Natalia.E.Papitashvili Get XML
↑

SPASE version 2.0.0

Person: Ms. Tamara J. Kovalick

Name
Ms. Tamara J. Kovalick
Organization
GSFC-Code 672
Email
Tamara.J.Kovalick@nasa.gov
Phone
+1-301-286-9422
Person ID
spase://SMWG/Person/Tamara.J.Kovalick Get XML
Release date
2008-03-19 00:00:00
↑

SPASE version 2.0.0

Person: Mr. Robert M. Candey

Name
Mr. Robert M. Candey
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
robert.m.candey@nasa.gov
Phone
1-301-286-6707
Person ID
spase://SMWG/Person/Robert.M.Candey Get XML
Release date
2007-05-30 19:43:56
↑

SPASE version 2.0.0

Person: Dr. Robert E. McGuire

Name
Dr. Robert E. McGuire
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
mcguire@mail630.gsfc.nasa.gov
Phone
1-301-286-7794
Person ID
spase://SMWG/Person/Robert.E.McGuire Get XML
Release date
2007-05-30 15:25:24
↑

SPASE version 2.0.0

Person: Dr. Adam Szabo

Name
Dr. Adam Szabo
Organization
NASA Goddard Space Flight Center
Address
Code 672, Greenbelt, MD 20771, USA
Email
adam.szabo@nasa.gov
Phone
1-301-286-5726
Person ID
spase://SMWG/Person/Adam.Szabo Get XML
Release date
2007-05-30 15:16:05
↑

SPASE version 2.0.0

Person: Dr. Alan J. Lazarus

Name
Dr. Alan J. Lazarus
Organization
Massachusetts Institute of Technology
Email
ajl@space.mit.edu
Phone
+1-617-253-4284
Person ID
spase://SMWG/Person/Alan.J.Lazarus Get XML
↑

SPASE version 1.3.0

Repository: SPDF

Repository ID
spase://SMWG/Repository/NASA/GSFC/SPDF Get XML
Name
SPDF
Description

Space Physics Data Facility

Additional information
SPDF

Space Physics Data Facility

Contact
Role Person
1. General contact Ms. Tamara J. Kovalick Get XML
2. Technical contact Mr. Robert M. Candey Get XML
3. Project scientist Dr. Robert E. McGuire Get XML
Release date
2008-08-26 21:02:30
Prior IDs
spase://vspo/repository/61
spase://SMWG/Repository/SPDF
↑