In the last lab meeting 2017/03/15, I presented the progression of waveform by position in the scintillator and plotted the delta of the nearest waveform to the to the PMT and each successive waveform after dividing the scintillator into 10 cm positions. From delta we saw that waveform changes by position. But the delta for the middle waveform in the scintillator was somehow unique from the rest and I tried to recompile my codes to fix the bugs as it was suggested but I have not found any yet. If I find no bug then I will need to seek a proper explanation for the uniqueness of this particular delta. 
I am also currently working on the algorithm to to determine the speed of light and the attenuation coefficient of our scintillators.
After the above jobs, I plan to reconstruct the CFD waveform.