That's more than 8 Empire State Buildings on top of one another.
There is a variance of 4,875 feet. One can only wonder why the discrepancy is so large.
Either there was less snow fall and ice accumulation, one area has been there a shorter time or one area is much warmer.
It reminds me of the woman on the commercial where she bought stuff to build her house and saved between 30 and 40 thousand $$$. There is a variance of $10K or 30%. The imprecision makes you wonder.