New Brunswick several years back had issues with the site being too high (maybe 8 or 9 years ago?) that got fixed. Mt. Holly Mets on another board say Newark is 2-3 too high most days along with Philly. I believe they said Philly is being looked into, but they haven't had a chance for Newark yet. I'll go with what they say.
How has the way they measured temps changed since 1870? Not that it matters, just wondering. Is there a website explaining it? I'm sure now it is all digital, so they track it 24/7. I'm guessing way back when they tracked every hour maybe?