Optimum row (1=S tip of US, 277=N tip of US, click on help above for map) and potential movement, in km of the latitudinal optimum for yellow birch

FIA-Optimum	163
PRD-Optimum	169
GISS-Optimum	199
GISS-Movement	300N
GFDL-Optimum	0
GFDL-Movement	Extirpated
HAD-Optimum	198
HAD-Movement	290N
UKMO-Optimum	0
UKMO-Movement	Extirpated
CCC-Optimum	206
CCC-Movement	370N