The gravity anomalies on the moon (generally accepted to be caused by mascons) are powerful enough to affect the orbit of satellites. I'm trying to determine how much effect they would have on a person standing on the surface. If we experience about 17% of Earth's gravity on the lunar surface, how much would that differ within one of these anomalies?
Upon some google-ing and wiki-ing I found this image of a gravity map of the moon:
That scale up the top is measured in milli-Gal which is thousandths of a cm/s^2. For scale gravity is ~9.81m/s^2 which equals ~981000mGal. The difference between gravity at sea level and the top of mount everest is 2Gal, or 2000mGal, which is 0.2% of average gravity. On the moon, the variation seems to be about 1000mGal, with the average being 162000mGal, which is about 0.6% of average gravity.
In conclusion, on the surface, there is no noticeable difference. Not to a human anyway.