FROM TH2F
constant
0.04566972474201017+-0.018600611913989994
chi2/ndof = 0.022970832492208944
plane
0.10958512553434979+-0.11953194100120734
invpt slope = 0.011621461925569385+-0.00870982652951996
theta slope = -0.0803295291750889+-0.100396480078495
chi2/ndof = 0.005625514265796365
from tgraph2D
constant
0.06604515686500545+-0.003316174232560361
chi2/ndof = 0.0015175875913004816
plane
0.1381034755966806+-0.009259635199190326
invpt slope = 0.013263730919111432+-0.0006990549654314648
theta slope = -0.10651580648141694+-0.008289453289559533
chi2/ndof = 0.0003560591704861267