FROM TH2F
constant
0.030790024121833914+-0.020398073611395243
chi2/ndof = 0.006888268075921888
plane
-0.024066501217373946+-0.1753633427034828
invpt slope = 0.005917155565909696+-0.012028039197319757
theta slope = 0.035300547545634255+-0.1498704847767972
chi2/ndof = 0.0028925349482732446
from tgraph2D
constant
0.03662186544048574+-0.0017515849004224487
chi2/ndof = 0.00023930787374747015
plane
-0.015509565464137754+-0.008564082959517182
invpt slope = 0.0071418718306340955+-0.0005350881433774956
theta slope = 0.027320951658223836+-0.007082201754096652
chi2/ndof = 7.023852295561772e-05