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				| Pythius |  | Member |  |  |  |  |  | Joined: 10 May 2020 |  | Posts: 12 |  |  |  |  
 
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			|  | In some frequencies i have zero or negative reverberation times on some points. And echogram/histogram is quite different than the others. 
 Is it only related with ray quantity or is there something i missed?
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