1. Quick Overview of TkrTotalHits Data for Light Test

2. 077006514-07706521 Xenon lamp illuminated grid perimeter and +Y and –X faces of ACD. Lamp scanned manually across LAT for half of 10 min run. Light files 077006514-20 Dark file 07706521

3. Simple Test Looked at TkrTotalHits range of 5-15 hits for a LAT half Light and dark files were normalized to cover the same amount of time. Excluded Tower 15 which showed a large flare, unrelated to the light test Subtracted the dark file from a single light file. Fit a constant to the data. If zero fell within 1.5 standard deviations of the fitted constant, that half of the LAT passed this light test. All light files passed.

4. Light Dark TkrTotal Hits -X half of LAT Light file: 077006518 Dark file: 077006521 const = -.364 Std= 1.82