SiPM_1-1 possible defects: streak of "tinted" pixels.
	SiPM_1-2 possible defects: dark specks near center and UL corner
	SiPM_1-3
	SiPM_1-4 possible defects: speck near center
	SiPM_1-5
	SiPM_2-1
	SiPM_2-2 possible defects: streak in the upper half
	SiPM_2-3 possible defects: scratches in epoxy surface (clearly not in the plane of the chip: note the shadow). Possible speck near right edge.
	SiPM_2-4
	SiPM_2-5
	SiPM_3-1 possible defects: faint "tinting" near LR corner similar to unit 1-4
	SiPM_3-2
	SiPM_3-3
	SiPM_3-4 possible defects: faint specks in the lower half
	SiPM_3-5
	SiPM_4-1 possible defects: scratch/epoxy surface non-uniformity.
	SiPM_4-2
	SiPM_4-3
	SiPM_4-4
	SiPM_4-5 possible defects: scratches in the upper half.