FROM TH2F
constant
0.02640559461174029+-0.017625380968003587
chi2/ndof = 0.029819154963520268
plane
0.10897432755999242+-0.11600608248397487
invpt slope = 0.011695613593543014+-0.013657782784801535
theta slope = -0.08670918868647168+-0.09610133613465213
chi2/ndof = 0.01095668845744598
from tgraph2D
constant
0.05293476520617482+-0.0056019010459963025
chi2/ndof = 0.002824316579624961
plane
0.17361631425709684+-0.01739058374234263
invpt slope = 0.018991183658276733+-0.0024826069405431183
theta slope = -0.15373041214847705+-0.015167471542759667
chi2/ndof = 0.00099417782023218