FROM TH2F
constant
0.04238617129308999+-0.018341160948212754
chi2/ndof = 0.02140110758343486
plane
0.07239389846957088+-0.11958065461187832
invpt slope = 0.011873949864006304+-0.009288421602004856
theta slope = -0.04970490052628761+-0.10005915697579824
chi2/ndof = 0.007775944969718777
from tgraph2D
constant
0.06129066208324087+-0.00381933072338786
chi2/ndof = 0.0019255219074216642
plane
0.1315988982802127+-0.014678219717204323
invpt slope = 0.013519726906756615+-0.0011964937564339913
theta slope = -0.0985035789646442+-0.012501651211626497
chi2/ndof = 0.00086993940339695