TIMESPLITRINEX

TIMESPLITRINEX splits a RINEX GPS file by time.
TIMESPLIT(FILENAME,t) breaks a RINEX file into shorter files of length t in seconds. Useful for breaking a large file into days, or a day file
into hours, etc.

EXAMPLE: If 'myfile.obs' is a day-long rinex file,
TIMESPLIT('myfile.obs',3600) will make 12 files of 1 hour long segments
with names: myfile0.obs,myfile1.obs,myfile2.obs,etc.