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File description:
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--File:                   /data2/a_envoyer/2024/01/20240109_204957_extract2.dat
--File size:               33.64 Go
--size of the Header:     20516    octets
--data:                   Spectrum
--start time:             2024-01-09 20:49:57.579530
--stop  time:             2024-01-09 21:09:12.509938
--duration (min):                19.248840
--dt (msec):                  2.621440
--accumulation:           8       
--number of channels:     4       
--number of cubes:        440572  
--number of frequencies:  5120    
--central freq (MHz):      14.06
--freq echantillon (MHz): 200.00
--Bandwidth (MHz):         15.62
--first frequency (MHz):    6.25
--last frequency (MHz):    21.87