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Pioneer 10 Geiger Tube Telescope (GTT) 15-min count rate data
var authors='Smith, Edward J.';
document.write(authors);
(2026).
Pioneer 10 Geiger Tube Telescope (GTT) 15-min count rate data.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/phaf-sb63. Accessed on document.write(currentDateStr);.
Note: Proper references, including
Copy BibTeX Citation
or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication.
ResourceID
spase://NASA/NumericalData/Pioneer10/GTT/PT15M
Description
This data set holds 15-min count rates and related
parameters for each of 8 sensors or multi-sensor coincidence modes,
as obtained from the U.Iowa Geiger Tube Telescope (GTT) experiment flown
on Pioneer 10. Single-sensor count rates are from the A (directional
fluxes of 5-21 MeV electrons and 30-80 MeV protons, plus omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons), B (directional fluxes
of 0.55-21 MeV electrons and 6.6-80 MeV protons, plus omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons), C (omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons), D (omnidirectional
fluxes of .GT.31 MeV electrons and .GT.80 MeV protons), and G (directional
fluxes of 0.06 MeV electrons plus omnidirectional fluxes of .GT.21 Mev
electrons and .GT.25 MeV protons) Geiger tubes. Coincidence mode rates
are given for Geiger tube combinations (A,B), (A,B,C) and (D,E,F).
The G and (A,B,C) rates are each given multiple times in the 12 rates
of each 15-min record. Additional parameters associated with each count
rate include numbers of counts contributing to each count rate, the
statistical uncertainty in each rate, and others used in U. Iowa's
processing and carried along for posterity. These are described in
the document identified in the "Information URL." The data were
provided to NSSDC on VMS-binary-formatted tapes and were converted to
ASCII by GSFC/SPDF in 2009. The data are available in 6-month ASCII
files whose sizes range from ~20MB early in the mission to .LT.1MB
late in the mission.
Metadata Rights
CC0-1.0:
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
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Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/Pioneer10/GTT/PT15M
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Pioneer 10 Geiger Tube Telescope (GTT) 15-min count rate data
DOI
https://doi.org/10.48322/phaf-sb63
ReleaseDate
2026-07-21 12:06:26Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-03-11 18:39:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-12-04 13:30:54Z
Note
Added MetadataRightsList and RightsList(s). Added ResourceType and NamingAuthority. Updated to 2.7.1. ZCB
RevisionEvent
ReleaseDate
2026-04-10 09:58:47Z
Note
Added new Contact(s). ZCB
RevisionEvent
ReleaseDate
2026-04-10 10:03:44Z
Note
Added PublicationInfo. ZCB
RevisionEvent
ReleaseDate
2026-04-30 16:34:08Z
Note
Added DOI. tlk
RevisionEvent
ReleaseDate
2026-06-26 13:26:07Z
Note
Add 'Z' to TemporalDescription:TimeSpan:StartDate, TemporalDescription:TimeSpan:StopDate. ZCB
RevisionEvent
ReleaseDate
2026-07-21 12:06:26Z
Note
Added HelioData InformationURL. JWL
Description
This data set holds 15-min count rates and related
parameters for each of 8 sensors or multi-sensor coincidence modes,
as obtained from the U.Iowa Geiger Tube Telescope (GTT) experiment flown
on Pioneer 10. Single-sensor count rates are from the A (directional
fluxes of 5-21 MeV electrons and 30-80 MeV protons, plus omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons), B (directional fluxes
of 0.55-21 MeV electrons and 6.6-80 MeV protons, plus omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons), C (omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons), D (omnidirectional
fluxes of .GT.31 MeV electrons and .GT.80 MeV protons), and G (directional
fluxes of 0.06 MeV electrons plus omnidirectional fluxes of .GT.21 Mev
electrons and .GT.25 MeV protons) Geiger tubes. Coincidence mode rates
are given for Geiger tube combinations (A,B), (A,B,C) and (D,E,F).
The G and (A,B,C) rates are each given multiple times in the 12 rates
of each 15-min record. Additional parameters associated with each count
rate include numbers of counts contributing to each count rate, the
statistical uncertainty in each rate, and others used in U. Iowa's
processing and carried along for posterity. These are described in
the document identified in the "Information URL." The data were
provided to NSSDC on VMS-binary-formatted tapes and were converted to
ASCII by GSFC/SPDF in 2009. The data are available in 6-month ASCII
files whose sizes range from ~20MB early in the mission to .LT.1MB
late in the mission.
Acknowledgement
Drs. James A. Van Allen, the original PI, and
Bruce Randall
PublicationInfo
Authors
Smith, Edward J.
PublicationDate
2026-04-10 10:03:44Z
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
PrincipalInvestigator
spase://SMWG/Person/Edward.J.Smith
2.
GeneralContact
spase://SMWG/Person/Bruce.A.Randall
InformationURL
Name
Iowa SFDU-formatted documentation
URL
https://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer10/particle/gtt/aavoldesc.sfd
Description
U.Iowa-written nssdcftp-resident descriptive document
InformationURL
Name
Readme file at SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer10/particle/gtt/aavoldesc.sfd
Description
Readme with format statement for this ASCII version
InformationURL
Name
HelioData
URL
https://helio.data.nasa.gov/dataset/Pioneer10_GTT_PT15M
Description
The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more.
PriorIDs
spase://VEPO/NumericalData/Pioneer10/GTT/PT15M
spase://VSPO/NumericalData/Pioneer10/GTT/PT15M
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer10/particle/gtt/ip_15min_ascii/
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/pioneer/pioneer10/particle/gtt/ip_15min_ascii/
Description
In CDF via HTTP from SPDF
Format
Text
DataExtent
Quantity
500
Units
MB
Acknowledgement
Drs. James A. Van Allen, the original PI, and
Bruce Randall at U.Iowa, plus GSFC's Space Physics Data Facility
ProcessingLevel
Uncalibrated
InstrumentIDs
spase://SMWG/Instrument/Pioneer10/GTT
MeasurementType
EnergeticParticles
TemporalDescription
TimeSpan
StartDate
1972-03-03 00:00:00Z
StopDate
2002-04-27 00:00:00Z
Note
Coverage is low after the mid-1990's.
Cadence
PT15M
ObservedRegion
Heliosphere.Outer
Parameter #1
Name
Sensor A count rate
ParameterKey
Column_35
Description
Count rate due to directional fluxes of
5-21 MeV electrons and 30-80 MeV protons, plus omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons
Cadence
PT15M
Units
1/sec
FillValue
0
Particle
ParticleType
Electron
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #2
Name
Sensor B count rate
ParameterKey
Column_36
Description
Count rate due to directional fluxes of
0.55-21 MeV electrons and 6.6-80 MeV protons, plus omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons
Cadence
PT15M
Units
1/sec
FillValue
0
Particle
ParticleType
Electron
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #3
Name
Sensor C count rate
ParameterKey
Column_40
Description
Count rate due to omnidirectional fluxes of
.GT.21 MeV electrons and .GT.80 MeV protons
Cadence
PT15M
Units
1/sec
FillValue
0
Particle
ParticleType
Electron
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #4
Name
Sensor D count rate
ParameterKey
Column_41
Description
Count rate due to omnidirectional fluxes of
.GT.31 MeV electrons and .GT.80 MeV protons
Cadence
PT15M
Units
1/sec
FillValue
0
Particle
ParticleType
Electron
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #5
Name
Sensor G count rate
ParameterKey
Column_34
Description
Count rate due to directional fluxes of
0.06 MeV electrons plus omnidirectional fluxes of .GT.21 Mev
electrons and .GT25 MeV protons. See also columns 37 and 44.
Cadence
PT15M
Units
1/sec
FillValue
0
Particle
ParticleType
Electron
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #6
Name
Coincidence mode (A,B) count rate
ParameterKey
Column_38
Description
(A,B) coincidence mode count rate due to directional fluxes of
.GT.21 MeV electrons and .GT.130 MeV protons.
Cadence
PT15M
Units
1/sec
FillValue
0
Particle
ParticleType
Electron
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #7
Name
Coincidence mode (A,B,C) count rate
ParameterKey
Column_39
Description
(A,B,C) coincidence mode count rate due to directional fluxes of
.GT.21 MeV electrons and .GT.130 MeV protons. See also columns 42 and 45.
Cadence
PT15M
Units
1/sec
FillValue
0
Particle
ParticleType
Electron
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #8
Name
Coincidence mode (D,E,F) count rate
ParameterKey
Column_43
Description
(D,E,F) coincidence mode count rate due to omnidirectional
fluxes of .GT.31 MeV electrons and .GT.150 MeV protons. E and F are Geiger
tubes whose individual count rates are not taken.
Cadence
PT15M
Units
1/sec
FillValue
0
Particle
ParticleType
Electron
ParticleType
Proton
ParticleQuantity
CountRate
Parameter #9
Name
Standard deviations in all count rates
ParameterKey
Column_46_through_Column_57
Description
Standard deviations [count rate/SQRT(#points)]
in each of the 12 count rates of columns 34-45.
Cadence
PT15M
Units
1/sec
Structure
Size
12
Description
Standard deviation in the count rates in Columns
34 to 45, respectively
FillValue
0
Particle
ParticleType
Electron
ParticleType
Proton
Qualifier
StandardDeviation
ParticleQuantity
CountRate
Parameter #10
Name
Numbers of raw counts in all count rates
ParameterKey
Column_94_through_Column_105
Description
Number of raw counts in each of the 12 count
rates in columns 34-45
Cadence
PT15M
Structure
Size
12
Description
numbers of counts in the count rates in Columns
34 to 45, respectively
FillValue
0
Particle
ParticleType
Electron
ParticleType
Proton
Qualifier
StandardDeviation
ParticleQuantity
CountRate
Parameter #11
Name
Spacecraft position information
ParameterKey
Column_108_through_Column_117
Description
In sequence, data words are: Earth-spacecraft
distance, AU; Earth-sun distance, AU; Sun-spacecraft distance, AU;
celestial longitude of Earth; celestial longitude of spacecraft;
longitude of solar equator + 270; celestial latitude of Earth;
celestial latitude of spacecraft; heliographic latitude of spacecraft;
heliographic latitude of Earth.
Cadence
PT15M
Structure
Size
10
Description
Positional parameters for spacecraft and earth
Support
SupportQuantity
Positional