Files contain 2.5 s time record of decline of sound pressure levels after switching off the
source, total number of measured levels is 500 with sampling time of 5ms.
Measured data are located in the second part of the file (approx. last 70%).

Your data are on the line starting 1	1.2500000000e+002	7.12201e+001	7.33295e+001 ...
where 125 is the central frequency of the band and 71.22 is the first datum measured at the time 0.

Axis x is not presented, you must to calculate it from the above information.

Choose one of the decay curve, indicate the approximation with straight line, and estimate 
corresponding reverberation time. The report should contain two reverberation spectra.