FROM TH2F
constant
0.016271895265547714+-0.014828704477875064
chi2/ndof = 0.019995678536133623
plane
0.07339113009328858+-0.08468734619954493
invpt slope = 0.010898333465863243+-0.016909722311702607
theta slope = -0.055716228897860966+-0.06536559604105675
chi2/ndof = 0.004649471567064771
from tgraph2D
constant
0.0326127205258733+-0.002906230313846335
chi2/ndof = 0.0007010324948556572
plane
0.08845197964466205+-0.007046709197139804
invpt slope = 0.014659234571685106+-0.0014167455617045911
theta slope = -0.07173833683907564+-0.006342308307410095
chi2/ndof = 0.00019687146712265763