FROM TH2F
constant
0.034208504972624176+-0.018779376975296868
chi2/ndof = 0.022201454616507615
plane
0.06166125447500079+-0.1227140313922902
invpt slope = 0.008442708603155527+-0.01219171842402349
theta slope = -0.03846069307709013+-0.09702377938065863
chi2/ndof = 0.01513586993030407
from tgraph2D
constant
0.053937740703167654+-0.004554945048652929
chi2/ndof = 0.002116247488805824
plane
0.1332708176626659+-0.019758503738366146
invpt slope = 0.012922493059157929+-0.002173405857107498
theta slope = -0.09926610739604672+-0.015851601766398306
chi2/ndof = 0.001187686379899893