FROM TH2F
constant
0.03689236910409056+-0.01783361052286036
chi2/ndof = 0.018676810375994755
plane
0.09789343548754509+-0.12367617484454009
invpt slope = 0.005939872182922369+-0.007973724719221862
theta slope = -0.06773445948644799+-0.10649163365935346
chi2/ndof = 0.010684254576844967
from tgraph2D
constant
0.0528901708503151+-0.002875244591509469
chi2/ndof = 0.0010085778383124428
plane
0.1382240770966917+-0.010563931954847852
invpt slope = 0.0082326116927966+-0.0008315068227408646
theta slope = -0.10340224013429172+-0.009223912205922459
chi2/ndof = 0.00035352004280425907