FROM TH2F
constant
0.9969351889751193+-0.10409732022453769
chi2/ndof = 0.3271840335789721
plane
3.4864241567282988+-0.5938240908244491
invpt slope = -0.02350962286424249+-0.08231095914437236
theta slope = -2.0610957436550295+-0.4651449129360716
chi2/ndof = 0.11390531413640713
from tgraph2D
constant
1.3038764693216576+-0.06801750858807842
chi2/ndof = 0.46263814754123095
plane
3.90023587666643+-0.17131066960794208
invpt slope = -0.00412127082796768+-0.028193643587823565
theta slope = -2.3866259174374913+-0.15054907066514964
chi2/ndof = 0.13075888821566137