The MIP peaks plotted in the attachment come from the L2W data. 4564 towers had a good MIP peak, 157 towers did not have enough counts in the spectra to fit, and 79 towers had fitting failures. 52 were recovered by hand for inclusion into calibration.

Also attached is a list of the 236 towers with bad or missing peaks.

I compared the 157 empty spectra with towers that did not have good slopes for relative gains calculated by Joe. Of the 157 towers, 52 had good slopes from his calculation. Those are in an attached list.

 Fig 1 MIP peak position: