FROM TH2F
constant
0.028129370223449097+-0.016064483086209346
chi2/ndof = 0.02514834362436126
plane
0.09139586119811174+-0.10145522406271822
invpt slope = 0.010132715007950184+-0.01062343830274629
theta slope = -0.0681893421855494+-0.08271482654247267
chi2/ndof = 0.010859605538756272
from tgraph2D
constant
0.050494626165543954+-0.004343702338414495
chi2/ndof = 0.0021697912496764144
plane
0.15230439309413013+-0.014176969010487317
invpt slope = 0.01378147916955554+-0.0018372943525526494
theta slope = -0.12224324606098869+-0.012124651693867576
chi2/ndof = 0.000950819194939036