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File description:
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--File:                   /data2/a_envoyer/2022/10/20221022_000754_extract2.dat
--File size:               105.22 Go
--size of the Header:     36900    octets
--data:                   Spectrum
--start time:             2022-10-22 00:07:54.668638
--stop  time:             2022-10-22 00:41:22.308966
--duration (min):                33.460672
--dt (msec):                  2.621440
--accumulation:           8       
--number of channels:     4       
--number of cubes:        765855  
--number of frequencies:  9216    
--central freq (MHz):      20.31
--freq echantillon (MHz): 200.00
--Bandwidth (MHz):         28.12
--first frequency (MHz):    6.25
--last frequency (MHz):    34.37