FROM TH2F
constant
0.010012015817725857+-0.012224282060453647
chi2/ndof = 0.006004193812591067
plane
0.028306381773363525+-0.11923807172747536
invpt slope = -0.0012718830491196208+-0.0038524280829432805
theta slope = -0.009604801457352426+-0.09252642381126196
chi2/ndof = 0.004075257160244603
from tgraph2D
constant
0.016189065441748498+-0.0008814846888531487
chi2/ndof = 5.672211373793592e-05
plane
0.032245652420118114+-0.008544077902346178
invpt slope = -0.00024252658365155015+-0.000312997492151769
theta slope = -0.011967862461645476+-0.006764078583278661
chi2/ndof = 5.486337705927102e-05