NAME
gr_getcdf_pspec - reduce data set
AUTHOR
Jens Trapp for DLR Gottingen
email : Jens.Trapp@DLR.De
Dec 23 1993
DESCRIPTION
Prints only each -nu date
SYNOPSIS:
gr_getcdf_pspec [- fho] ...
OPTIONS:
-f input file name
-o output file name. If left away -> stdout -h this output.