aareadme for
ftp://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/hourly/

This data set consists of hourly fluxes of protons, electrons and alpha
particles in three species-specific subdirectories, and of hourly count
rates of "heavies" in a fourth subdirectory  The fluxes are based on
count rates pulled to GSFC/SPDF from UNH in 2011 and converted by the
equation F = CR / [2.05 * (E2-E1)], where 2.05 is the geometric factor
relevant to all the rates and fluxes and E1,E2 are the bounds of the
relevant energy band.  See
ftp://ulysses.sr.unh.edu/WWW/Simpson/IMPData/hourly.html  for the
UNH-resident version.  The count rates at UNH are based on the
folding together of telescope coincidence-mode count rates and
pulse height analysis data.  The data at UNH and at SPDF are ASCII
formatted.  The data at UNH are in monthly files and at SPDF are in
annual files

The proton and alpha particle fluxes are each given in 9 energy bands
in the 11-95 MeV/n range, and the electron fluxes are given in 0.7- 2.0,
2-12 and 12-50 MeV bands.  The "heavies" rates are of both heavy
nuclei (CNO>80,<80 MeV/n; Z>8 low and high energy) and of all
penetrating particles (including protons with E>  106 MeV).

The species-specific subdirectories have readme files that identify
the energy bands relevant to each species, as given in the UNH-resident
monthly files' headers.  The fill value for all fluxes and rates is
9.999E+05 in the SPDF-resident files.


An OMNIWeb-Plus interface for subsetting, plotting and listing these
data is available at https://omniweb.gsfc.nasa.gov/ftpbrowser/imp_chi_crnc_1h.html


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