Data Set Summary
================
Data Set ID: ULY-J-HISCALE-4-SUMM-LEFS60-V1.0
Instrument: HISCALE Low Energy Foil Spectrometer 60 (LEFS60)
Instrument P.I.: Louis J. Lanzerotti
Data Supplier: Thomas P. Armstrong
Data sampling rate: CRUISE: 1 hour, LEFS: 15 minutes
Data Set Start time: 1991-12-31T00:00:00.000Z
Data Set Stop time: 1992-02-16T23:45:00.000Z

Naming convention
-----------------
This data set consists of two data files named:

CRUISE.TAB    1 hour averaged cruise data 1991-12-31 to 1992-02-01
LEFS60.TAB    15 minute averaged encounter data 1992-02-02 to 1992-02-16

Record format
-------------
These files can be read according to the FORTRAN format statement:
  '(a24,7(1x,1pe9.2))'
where 'a24' is the time stamp in PDS format: yyyy-mm-ddThh:mm:ss.sssZ.
The individual elements of the time field can be read according to the 
statement:
  '(i4,4(1x,i2),1x,f6.3,1x)' year, month, day, hour, minute, seconds.
thus a record may be alternatively be read according to the format:
  '(i4,4(1x,i2),1x,f6.3,1x,7(1x,1pe9.2))'

Data column descriptions
------------------------
time   a24      spacecraft event time in the format: yyyy-mm-ddThh:mm:ss.sssZ
E1     1pe9.2   electron flux in 42-65 keV range
E2     1pe9.2   electron flux in 64-112 keV range
E3     1pe9.2   electron flux in 112-178 keV range
E4     1pe9.2   electron flux in 178-290 keV range
FP5    1pe9.2   ion flux in 546-761 keV range
FP6    1pe9.2   ion flux in 761-1223 keV range
FP7    1pe9.2   ion flux in 1.223-4.974 MeV range

Missing data flag value
-----------------------
Any data column whose value is -9.99e+10 is a missing data value.

Data Description
================

HI-SCALE 

   The Heliosphere Instrument for Spectra, Composition, and Anisotropy at Low
   Energies is designed to make measurements of interplanetary ions and 
   electrons throughout the entire Ulysses mission.

   The ions (Ei > 50 keV) and electrons (Ee > 30 keV) are identified uniquely 
   and detected by five separate solid-state detector telescopes that are 
   oriented to give nearly complete pitch-angle coverage from the spinning 
   spacecraft.

   Ion elemental abundances are determined by a del E vs E telescope using a 
   thin 5 micrometer front solid state detector element in a three element 
   telescope.  Experiment operation is controlled by a microprocessor-based 
   data system.

   Inflight calibration is provided by radioactive sources mounted on 
   telescope covers which can be closed for calibration purposes and for 
   radiation protection during the course of the mission.

   Ion and electron spectral information is determined using both broad-
   energy-range rate channels and a 32 channel pulse-height analyses 
   (channels spaced logarithmically) for more detailed spectra.

   The instrument weighs 5.775 kg and uses 4.0 W of power.

About LEFS60

LEFS60 counts both electron and ions at 60 degrees from the space-craft spin 
axis .

E1      42-65        keV  electrons
E2      64-112       keV  electrons
E3      112-178      keV  electrons
E4      178-290      keV  electrons
FP5     546-761      keV  ions
FP6     761-1223     keV  ions
FP7     1.223-4.974  MeV  ions