That is the range of temperatures if you are going to be storing the tape for over 6 months.

Also keep in mind the monitoring for the room hit 115F, so the temp inside the tape drive/robot might have been over 115F.

Similar with the drives, but the drives were fine.

Yes, note the operational temperature is below 115F as well.

That's if you are actively trying to do backup.

True, I don't remember if the backup software was running. However we lost tapes in the cartridge in the drive (7 tapes I think) and also tapes in other cartridges (banks of 7).

I think we had 4 cartridges of 7, then upgraded to a newer robot that had 8 cartridges of 11.

At the time I was pretty shocked, and asked around and apparently it wasn't a particularly unusual event. Fortunately we always kept a cartridge rotated out to a different room.