====================================================
File description:
====================================================
--File:                   /data2/a_envoyer/2021/10/20211018_223439_extract2.dat
--File size:               7.54 Go
--size of the Header:     24612    octets
--data:                   Spectrum
--start time:             2021-10-18 22:34:39.888001
--stop  time:             2021-10-18 22:38:15.760980
--duration (min):                3.5978830
--dt (msec):                  2.621440
--accumulation:           8       
--number of channels:     4       
--number of cubes:        82350   
--number of frequencies:  6144    
--central freq (MHz):      15.62
--freq echantillon (MHz): 200.00
--Bandwidth (MHz):         18.75
--first frequency (MHz):    6.25
--last frequency (MHz):    25.00