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File description:
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--File:                   /data2/a_envoyer/2026/01/20260125_001212_extract2.dat
--File size:               45.03 Go
--size of the Header:     16420    octets
--data:                   Spectrum
--start time:             2026-01-25 00:12:12.154548
--stop  time:             2026-01-25 00:44:24.239663
--duration (min):                32.201419
--dt (msec):                  2.621440
--accumulation:           8       
--number of channels:     4       
--number of cubes:        737033  
--number of frequencies:  4096    
--central freq (MHz):      12.50
--freq echantillon (MHz): 200.00
--Bandwidth (MHz):         12.50
--first frequency (MHz):    6.25
--last frequency (MHz):    18.75