FROM TH2F
constant
0.028478690533182607+-0.01778847646053648
chi2/ndof = 0.018126304709937292
plane
0.037156483060944184+-0.10478693567512325
invpt slope = 0.006740208941886968+-0.010711404191285995
theta slope = -0.020687446126199216+-0.09258172083896773
chi2/ndof = 0.013724849542811725
from tgraph2D
constant
0.04504756825041066+-0.00308141356925323
chi2/ndof = 0.0008925403009129284
plane
0.12212299046546865+-0.012382761279358565
invpt slope = 0.008547371007639448+-0.001336530736082235
theta slope = -0.0903838514265372+-0.010793950648678526
chi2/ndof = 0.0004245561685391068