====================================================
File description:
====================================================
--File:                   /data2/a_envoyer/2019/04/20190430_034523_extract2.dat
--File size:               57.33 Go
--size of the Header:     32804    octets
--data:                   Spectrum
--start time:             2019-04-30 03:45:23.879452
--stop  time:             2019-04-30 04:05:54.367688
--duration (min):                20.508137
--dt (msec):                  2.621440
--accumulation:           8       
--number of channels:     4       
--number of cubes:        469395  
--number of frequencies:  8192    
--central freq (MHz):      18.75
--freq echantillon (MHz): 200.00
--Bandwidth (MHz):         25.00
--first frequency (MHz):    6.25
--last frequency (MHz):    31.25