Data Set Summary
================
Data Set ID: ULY-J-HISCALE-4-SUMM-LEMS30-V1.0
Instrument: HISCALE Low Energy Magnetic Spectrometer 30 (LEMS30)
Instrument P.I.: Louis J. Lanzerotti
Data Supplier: Thomas P. Armstrong
Data sampling rate: CRUISE: 1 hour, LEMS30: 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 files named:

CRUISE.TAB    1 hour averaged cruise data 1991-12-31 to 1992-02-01
LEMS30.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:
  '(a24,8(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,8(1x,1pe9.2))'

Data column descriptions
------------------------
time    a24      spacecraft event time in the format: yyyy-mm-ddThh:mm:ss.sssZ
P1      1pe9.2   LEMS30 ion flux (56-78 keV)
P2      1pe9.2   LEMS30 ion flux (78-130 keV)
P3      1pe9.2   LEMS30 ion flux (130-214 keV)
P4      1pe9.2   LEMS30 ion flux (214-337 keV)
P5      1pe9.2   LEMS30 ion flux (337-594 keV)
P6      1pe9.2   LEMS30 ion flux (594-1073 keV)
P7      1pe9.2   LEMS30 ion flux (1.073-1.802 MeV)
P8      1pe9.2   LEMS30 ion flux (1.802-5.0 MeV)

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 LEMS30

LEMS30 counts ions at 30 degrees from the space-craft spin axis .

P1      56-78        keV  ions
P2      78-130       keV  ions
P3      130-214      keV  ions
P4      214-337      keV  ions
P5      337-594      keV  ions
P6      594-1073     keV  ions
P7      1.073-1.802  MeV  ions
P8      1.802-5.0    MeV  ions