"You do realize that the "633 inches per degree F" was a standard "random preposterous result""

I (of course) did the calculations* and realized that, as I found your figures off by no more that plus or minus 632 inches per degree F, I shouldn't quibble. I rarely come any closer than 614 inches per degree F when proposing the preposerous myself. I can hardly demand more of you.

*anyone need a couple miles of melted-down 16 penny nails? Costly experiment, that.