Attached are histograms of various tower gain ratios:
The first plot is the ratio of the tower gains from my full Run12 pp500 calibration (SMD, pre/post-shower, and towers) to Ting's Run12 pp500 tower calibration.
The second plot compares my pp500 tower gains to Bill's Run12 pp200 gains.
Last plot compares pp500 tower gains to the ideal gains.