FROM TH2F
constant
0.02510165926315536+-0.01617020769827829
chi2/ndof = 0.023172256148054904
plane
0.019723287919516785+-0.12563956530793083
invpt slope = -0.0009289261419228008+-0.007518471907550643
theta slope = 0.007904391367901373+-0.10776853858416627
chi2/ndof = 0.02338643255041916
from tgraph2D
constant
0.046544777640696235+-0.0032707645317975307
chi2/ndof = 0.0010804879628561847
plane
0.07582436403861423+-0.018945464996004423
invpt slope = 0.0082484020173148+-0.0014528029452838729
theta slope = -0.04950097995130265+-0.016085768943185485
chi2/ndof = 0.0007382507495504893