FROM TH2F
constant
0.010113131957589725+-0.014515173065225696
chi2/ndof = 0.01210049009811238
plane
-0.014718373712946457+-0.04625488806347833
invpt slope = 0.005915125907095763+-0.023449583216684652
theta slope = 0.020844316259537407+-0.04503690723002987
chi2/ndof = 0.005452288588077784
from tgraph2D
constant
0.02124466302012469+-0.0013276656452164523
chi2/ndof = 9.166019540559585e-05
plane
0.02322763146186893+-0.0060579928770144
invpt slope = 0.004672478115578744+-0.001305489247784399
theta slope = -0.007966770751165577+-0.005108661755710067
chi2/ndof = 7.195977500760716e-05