AE-E EUV SPECTROMETER FLUX DATA
                -------------------------------

This directory contains the EUV flux data from the Extreme
UltraViolet Spectrometer on Atmosphere Explorer E. 

SC21OBS.DAT
The data for 15 wavelength groups and cover the time period 
from the 182nd day of 1977 to the 160th day of 1981. The data 
are normalized to the reference spectrum SC21REFW.DAT (located
in directory REF_SPEC). 

GET_EUVS.FOR 
This is a Fortran program to read the EUV data file SC21OBS.DAT 
(written by Dean Pesnell).

Hinteregger_explanation_SC21.pdf
Explanations by the EUVS PI Hans Hinteregger regarding the 
SC21OBS.DAT data file and the SC21REFW.DAT reference spectrum.

REF_SPEC directory
see README file in this directory.

The EUVS instrument is described in an article by Hinteregger
in Radio Science, Volume 8, Number 4, 349-360, 1973. For more
references please consult the file REF_LIST in the data/ae/aedoc
directory.

In addition to the solar EUV measurements, the EUVS also provided
an opportunity to study the optical depth (absorption) of the
thermosphere. Details of this analysis are described in L.M. 
Chaikin and K. Fukui, Absorption Data Analysis for EUVS Experiment 
on the Satellites AE-C, D, and E, Air Force Geophysics Laboratory, 
Report AFGL-TR-79-0191, Hanscom AFB, Massachusetts, August 1979.