FROM TH2F
constant
0.03239479693268364+-0.021988734202274336
chi2/ndof = 0.008430202220232545
plane
0.0740531715517615+-0.16161730753742184
invpt slope = 0.009021168192076871+-0.015559856374515351
theta slope = -0.04997214594138002+-0.1423689450125677
chi2/ndof = 0.002783720626975861
from tgraph2D
constant
0.038438496318679016+-0.002419190319974984
chi2/ndof = 0.00042723117173014364
plane
0.0988345809669092+-0.008772722261788763
invpt slope = 0.009467579426984007+-0.0008697036311654663
theta slope = -0.07064968667245852+-0.007902648538613274
chi2/ndof = 0.00013557259006267963