FROM TH2F
constant
0.043007354003552385+-0.017403122998562413
chi2/ndof = 0.03249537630344628
plane
0.08217604777340107+-0.09483650913936228
invpt slope = 0.015783355032435466+-0.00861691991420497
theta slope = -0.06554799124973096+-0.08427906135554389
chi2/ndof = 0.006707206068936004
from tgraph2D
constant
0.07153090977330831+-0.004009440664067424
chi2/ndof = 0.0024113421676709764
plane
0.10382807239016462+-0.009069848665499517
invpt slope = 0.01937552248723983+-0.0008209431427871524
theta slope = -0.09174014741406909+-0.008903713240709089
chi2/ndof = 0.0005074808656556454