1/12/2018
Copied original code from 
/data/data074/users/beach/dobson_overpass/NPP/NP_V8_NCDF

This version modified the above code to work with NetCDF data produced at NDE
for N20 V8PRO.
Will also work with reprocessed data by changing the input path to V8PRO_REP


eb-4/25/2019: Profile Error code 3 (tmpozcode) is common since about 8/2/2018
 and data is getting filtered out. Thus output file contains zero values
 after this date. This will be fixed in a future V8PRO delivery.

eb- Did not produce overpass using Zhihua's v4r1 reprocessing due to the SDR
reprocessing being incomplete and issues that were found in the reprocessed
SDR data. Continued to use operational data instead.

8/29/23  (/data/smcd9/ebeach/dobson_overpass/N20/V8PRO_NDE_test2)
Started producing operational overpass for the entire record and on a daily 
basis for ESRL. "main.pro" is setup for 5x5 data. This version should be used 
instead of .../N20/V8PRO_NDE. It handles the 5x5 data more accurately.

