====================================================
File description:
====================================================
--File:                   /data2/a_envoyer/2021/11/20211119_181944_extract2.dat
--File size:               39.24 Go
--size of the Header:     16420    octets
--data:                   Spectrum
--start time:             2021-11-19 18:19:44.102328
--stop  time:             2021-11-19 18:47:47.929244
--duration (min):                28.063782
--dt (msec):                  2.621440
--accumulation:           8       
--number of channels:     4       
--number of cubes:        642330  
--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