FROM TH2F
constant
16.036174507226608+-0.49669948314208473
chi2/ndof = 39.36517519280406
plane
47.7605899335474+-2.2968826558553763
invpt slope = -6.624482896219362+-0.702483741297936
theta slope = -16.37002284896501+-1.9171401998019404
chi2/ndof = 37.06332436962527
from tgraph2D
constant
58.201563580460814+-3.6253040671689014
chi2/ndof = 946.283730133962
plane
8.15788957703085+-15.982786041151927
invpt slope = -12.205022341949455+-2.584009376195627
theta slope = 66.02515794400549+-14.393516518441931
chi2/ndof = 582.7009117162257