FROM TH2F
constant
0.015344966431041518+-0.016553466640565295
chi2/ndof = 0.008024446455199188
plane
0.04891285232260332+-0.17247761592565017
invpt slope = 0.00019854524883868062+-0.009487405673296886
theta slope = -0.027763323447760654+-0.14481066866115352
chi2/ndof = 0.007601565892067386
from tgraph2D
constant
0.02161669613881402+-0.0019136936547089693
chi2/ndof = 0.00022339562765649255
plane
0.03300129749247132+-0.018964322007041907
invpt slope = 0.0018370534625833416+-0.0011448000315691157
theta slope = -0.012940379460220275+-0.016109216430128734
chi2/ndof = 0.00022060429727956533