File: P10CPIHR_FMT.txt                              Version 2/11/2000 JFC
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PIONEER 10 CHARGED PARTICLE INSTRUMENT (CPI): 
HOURLY INTERPLANETARY COUNTING RATES

Principal Investigator: Professor John A. Simpson
                        Laboratory for Astrophysics and Space Research
                        University of Chicago

Time Coverage: 1972-03-03 to 1992-09-01

Data File Contents:

     P10CPyyn.DAT -> hourly averages for date 
                     block yyn

                     yyA -> first six months of year yy
                     yyB -> second six months of year yy


Parameter List:

IY     = Year (yy)                   [SCET-UT]
IDOY   = Day of year (1 = Jan. 1)    [SCET-UT]
IH     = Hour                        [SCET-UT]
RID2P  = ID-2 rate for 11-20 MeV protons [cps] 
RID2HE = ID-2 rate for 11-20 MeV/nucleon helium [cps]
RID3P  = ID-3 rate for 20-24 MeV protons [cps]
RID3HE = ID-3 rate for 20-24 MeV/nucleon helium [cps]
RID4P  = ID-4 rate for 24-29 MeV protons [cps]
RID4HE = ID-4 rate for 24-29 MeV/nucleon helium [cps]
RID5P  = ID-5 rate for 29-67 MeV protons [cps]
RID5HE = ID-5 rate for 29-67 MeV/nucleon helium [cps]
RID5E1 = ID-5 rate for 7-17 MeV electrons [cps]
RID5E2 = ID-5 rate for 2 x minimum-ionizing [cps]
RID7   = ID-7 + ID-13 integral rate for ions at E > 67 MeV/nucleon [cps]
RID7ZG5= ID-7 integral rate for Z > 5 ions at E > 67 MeV/nucleon [cps]
              
Parameter READ Format:

      READ(5,10) IY,IDOY,IH,RID2P,RID2HE,RID3P,RID3HE,RID4P,
     *   RID4HE,RID5P,RID5HE,RID5E1,RID5E2,RID7,RID7ZG5
10    FORMAT(1X,I2,1X,I3,1X,I2,12(1PE10.2))

Note: These rates were calculated as averages from fifteen-minute average
counts and accumulation times by the pseudocount method described in the
Pioneer 10 CPI dataset documentation.

Data Source: off-line NSSDC archive, data set ID 72-012A-02D

Related Information and Data:

Further details on the spacecraft, experiment, data sets at NSSDC, and 
related WWW sites can be found on the Pioneer 10/11 flight project page 
under

http://nssdc.gsfc.nasa.gov/space/

Hour averages of the interplanetary solar wind data from, and hourly 
heliocentric coordinates of, Pioneer 10/11 and other interplanetary 
spacecraft may be also be accessed and plotted on-line through the 
COHOWeb service based at the same WWW site as above.

Acknowledgement:

Use of these data in publications should be accompanied at minimum by
acknowledgements of the National Space Science Data Center and the 
responsible Principal Investigator defined in the experiment 
documentation provided here.