FROM TH2F
constant
0.04174492909510776+-0.020330177820705644
chi2/ndof = 0.011548428165627947
plane
0.0422279630171247+-0.05185965810634286
invpt slope = -0.006941864804483424+-0.025415870542333022
theta slope = 0.013715727429468983+-0.04922785921995362
chi2/ndof = 0.01044903827395369
from tgraph2D
constant
0.05431164126558738+-0.001683626930819805
chi2/ndof = 0.0003401519570412746
plane
0.04857439477295098+-0.00362984487649205
invpt slope = 0.0007347333830088279+-0.0017866914744075883
theta slope = 0.0066244203127124625+-0.004201030983826773
chi2/ndof = 0.0003365790272325148