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File description:
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--File:                   /data2/a_envoyer/2026/03/20260303_222142_extract2.dat
--File size:               77.89 Go
--size of the Header:     28708    octets
--data:                   Spectrum
--start time:             2026-03-03 22:21:42.937438
--stop  time:             2026-03-03 22:53:33.435021
--duration (min):                31.841626
--dt (msec):                  2.621440
--accumulation:           8       
--number of channels:     4       
--number of cubes:        728798  
--number of frequencies:  7168    
--central freq (MHz):      17.19
--freq echantillon (MHz): 200.00
--Bandwidth (MHz):         21.87
--first frequency (MHz):    6.25
--last frequency (MHz):    28.12