FROM TH2F
constant
0.039100749041660214+-0.018853682784324418
chi2/ndof = 0.01647085754064087
plane
0.06491974727983943+-0.15765173742151328
invpt slope = 0.007625905476558584+-0.00878564365141438
theta slope = -0.04292590557833505+-0.12882571922892774
chi2/ndof = 0.007786868995412515
from tgraph2D
constant
0.05402975108543792+-0.003047042955511838
chi2/ndof = 0.0010584296683896883
plane
0.13716100324856367+-0.012500360869229031
invpt slope = 0.008141563306732002+-0.0008271683079160808
theta slope = -0.10172500328713055+-0.010391291138703351
chi2/ndof = 0.00038564691046520953