FROM TH2F
constant
0.02214217315175029+-0.018179114285486898
chi2/ndof = 0.02193011757004402
plane
0.07559114480670616+-0.1326597696246136
invpt slope = 0.005501761592713763+-0.016439606364397272
theta slope = -0.05323211837791868+-0.10493100016880737
chi2/ndof = 0.014260684671120554
from tgraph2D
constant
0.041421591844066415+-0.004663148028702519
chi2/ndof = 0.0015438914170388567
plane
0.13820073283937867+-0.018291067441313487
invpt slope = 0.012266436865308643+-0.0028859428833844436
theta slope = -0.11197494472110467+-0.015507511113468857
chi2/ndof = 0.0007391636944984162