Sorry to hear of your M250 failure.
Line 219 - no failures but four of the M250s have been removed and replaced with S280s in July of 2016 to take advantage of the higher power rating of the S280 with the SolarWorld 275watt modules . Number of installed M250s on that spreadsheet line is now eight.
Line 236 - no failures of the S280s attached to the Sharp 235watt modules.
Need to add another line for four S280s that are attached to the SolarWorld 275watt modules .