FROM TH2F
constant
0.00837799648036505+-0.011816652436681946
chi2/ndof = 0.01955842813023264
plane
0.06532586251995735+-0.10532926669774126
invpt slope = -0.000494913010173182+-0.0071203962462007865
theta slope = -0.04426969528462675+-0.08832146471947698
chi2/ndof = 0.014793299880320961
from tgraph2D
constant
0.026926187308176537+-0.0043659091821882075
chi2/ndof = 0.0012199144308511832
plane
0.20513018811360542+-0.016929351427635846
invpt slope = 0.0003025981749022787+-0.0011452813084704132
theta slope = -0.1569076334516424+-0.014459948995805463
chi2/ndof = 0.00042995990440197594