This directory contains the PVO Electron Temperature Probe (OETP)
solar EUV daily average dataset. The data cover orbits 1-2500,
however, data is not available for all orbits.

This dataset gives the magnitude of the
photoemission current from the radial probe, Ipe, (in units of 10-9 amps)
Ipe dominates the ion current measurements outside the Venusian
ionosphere, making possible the serendipitous measurement of the total
solar EUV flux.  The latter is an important parameter because solar EUV is
the main source of ionization and heating for the Venusian thermosphere
and ionosphere.

The data are provided in a single ASCII table (SOLAREUV.TAB).
The data file has a detached PDS label file (.LBL) which describes some of
the physical properties of the data.  There is a single format file (.FMT) which
describes the columns of the data files. The file DATASET.TXT
provides a more thorough discussion of the dataset.

Each record in the data file contains 10 orbits (days) of daily
averages. A single records has the following data columns:

Columns in all data files:
=====================================================
name      type       units       description
-----------------------------------------------------
start_date   integer    N/A         Ipe start date  (YYDOY)
stop_date    integer    N/A         Ipe stop date
start_orbit  integer    N/A         Ipe start orbit
stop_orbit   integer    N/A         Ipe stop orbit
IPE-1        float      10^9 amps   Photoemision current, date 1, orbit 1.
.
.
.
IPE-10                              Photoemision current, date 10, orbit 10
-----------------------------------------------------


Any data column whose value is 0 is a missing data value.

Catalog data which includes instrument, dataset, and data parameter
descriptions are located at:

/CATALOG/CATALOG.CAT