FROM TH2F
constant
0.04398929540702556+-0.017853935425555016
chi2/ndof = 0.017650029231116363
plane
0.045588842683662846+-0.09974113821708891
invpt slope = 0.010572976424929438+-0.008709010274379168
theta slope = -0.025656016979974876+-0.08278958703934303
chi2/ndof = 0.0065210075208045745
from tgraph2D
constant
0.05948568122749144+-0.0028030773125602496
chi2/ndof = 0.0011314429089674836
plane
0.07527233153133925+-0.008556050390779167
invpt slope = 0.012005733228674436+-0.0006921709719068333
theta slope = -0.050595022163636344+-0.00729758748418071
chi2/ndof = 0.0003478961392291404