A summary of the 3 extra fiber bundles to use in case of emergency, in order of best to worst (so in the case that only 1 bundle needs to be replaced, use FB25)

FB#	Status	Comments	Average	Max	Full Sheet
25	Healthy	Broken Y-Splitter that was epoxied back together	-56%	-63%	FB25
28	Healthy	~6 inches short, had to cut connectors off and re-epoxy	-59%	-69%	FB28
22	Healthy	Tests fine, but a fiber looks suspect (possible cracking?)	-58%	-71%	FB22

Images
Broken Y-Splitter on FB25
One suspect fiber on FB22

Hard to get a picture of the suspect fiber on a clear fiber bundle, but looks similar to this. The fiber is #3, which is also the maximum signal loss fiber at -71%, but it is still within the passing criteria.


Notes on FB12
Spreadsheet
Picture

Fiber #24 "glows" on both ends (only FSC side shown). Appears to be back reflection from a crack. Technically the bundle is passing, but this fiber is at -74% transmission. Planning to send this bundle to China.