Pioneer 11 Geiger Tube Telescope (GTT) 15-min count rate data

2021-03-11 18:39:11Z

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 11. Single-sensor count rates are from the A (directional
fluxes of 0.04-21 MeV electrons and 0.61-80 MeV protons, plus omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons), B (directional fluxes
of 0.56-21 MeV electrons and 9-80 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 0.61-3.41 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 first "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.

Drs. James A. Van Allen, the original PI, and Bruce Randall

spase://VEPO/NumericalData/Pioneer11/GTT/PT15M

spase://VSPO/NumericalData/Pioneer11/GTT/PT15M

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Drs. James A. Van Allen, the original PI, and Bruce Randall at U.Iowa, plus GSFC's Space Physics Data Facility

PT15M

Sensor A count rate

Column_35

Count rate due to directional fluxes of
0.04-21 MeV electrons and 0.61-80 MeV protons, plus omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons

PT15M

1/sec

0

Sensor B count rate

Column_36

Count rate due to directional fluxes of
0.56-21 MeV electrons and 9-80 MeV protons, plus omnidirectional
fluxes of .GT.21 MeV electrons and .GT.80 MeV protons

PT15M

1/sec

0

Sensor C count rate

Column_40

Count rate due to omnidirectional fluxes of
.GT.21 MeV electrons and .GT.80 MeV protons

PT15M

1/sec

0

Sensor D count rate

Column_41

Count rate due to omnidirectional fluxes of
.GT.31 MeV electrons and .GT.80 MeV protons

PT15M

1/sec

0

Sensor G count rate

Column_34

Count rate due to directional fluxes of
0.61-3.41 Mev protons. See also columns 37 and 44.

PT15M

1/sec

0

Coincidence mode (A,B) count rate

Column_38

(A,B) coincidence mode count rate due to directional fluxes of
.GT.21 MeV electrons and .GT.130 MeV protons.

PT15M

1/sec

0

Coincidence mode (A,B,C) count rate

Column_39

(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.

PT15M

1/sec

0

Coincidence mode (D,E,F) count rate

Column_43

(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.

PT15M

1/sec

0

Standard deviations in all count rates

Column_46_through_Column_57

Standard deviations [count rate/SQRT(#points)]
in each of the 12 count rates of columns 34-45.

PT15M

1/sec

0

Numbers of raw counts in all count rates

Column_94_through_Column_105

Number of raw counts in each of the 12 count
rates in columns 34-45

PT15M

0

Spacecraft position information

Column_108_through_Column_117

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.

PT15M