My little whiskers twitch when I read something like that, because the first thing that comes to mind is "if something so basic and so fundamental as...
Lower MAP is less pressure. MAP/baro decreases as altitude increases, increases as altitude decreases. Higher than 101 is a pressure that can't exist...
I believe that 101.3 kpa is sea level, so should be slightly higher than sea level. I verified this also by scanning my Yukon, and it read at 100kpa,...