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File description:
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--File:                   /data2/a_envoyer/2020/05/20200504_060850_extract2.dat
--File size:               1.51 Go
--size of the Header:     16420    octets
--data:                   Spectrum
--start time:             2020-05-04 06:08:50.814180
--stop  time:             2020-05-04 06:09:55.574239
--duration (min):                1.0793343
--dt (msec):                  2.621440
--accumulation:           8       
--number of channels:     4       
--number of cubes:        24705   
--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