For the beam tune BEFORE going through the Compton chicane this afternoon, the following is the mapping between MCC-speak and what spot++/raster++ saw for the 2.6 GeV beam. The "raster++" sizes are estimated out to the tails with an uncertainty of 0.5mm.
Run MCC size raster++ (x by y)(mm) RMS (mm) 2809 3x3 4.0 by 4.5 1.02 by 1.09 2808 4x4 4.0 by 4.5 1.07 by 1.17 2807 5x5 4.5 by 5.0 1.15 by 1.28 2806 6x6 5.0 by 5.5 1.20 by 1.35 2810 7x7 5.5 by 6.0 1.28 by 1.45