Well snow measuring is an inexact science and probably the most difficult variable we routinely measure. It’s difficult to standardize measurements. And yeah, human error can really increase the errors as well.
And for shids and gigs the BOS radar estimates. Obviously the values don’t explicitly matter, but it at least gives you an idea of who had the most. Looks like that little finger of green is right where that total was.
They were pounding when all of those 10-12” reports came out yesterday mid morning. I honestly expected to see more 15-18” obs. Those who cleared probably did, those who let it set probably stuck around that 12-13” mark.