CDC run 2551 drift time fits
From GlueXWiki
Fit function: TF1 *g2 = new TF1("g2","[0] * (1 + [1]*exp(([3]-x)/[2]) + [7]*exp(([3]-x)/[8]) ) / ( (1+exp(([3]-x)/[5])) * (1+exp((x-[4])/[6])) )"); [0] overall height [1] amplitude of 1st exp contrib to peak [2] first exp fall-off [3] t0 [4] tmax [5] slope up of t0 edge [6] slope down of tmax edge [7] amplitude of 2nd exp contrib to peak [8] second exp fall-off