FROM TH2F
constant
0.021233971302139547+-0.01930092775998753
chi2/ndof = 0.017413698563028622
plane
0.08224331949262123+-0.12509845496098887
invpt slope = 0.007012423308672466+-0.023959119085087983
theta slope = -0.06135317506593979+-0.10158395199023736
chi2/ndof = 0.007379562738826438
from tgraph2D
constant
0.03532272709447607+-0.0041394563958134485
chi2/ndof = 0.0010795112529975804
plane
0.14007226276575024+-0.01325789733316322
invpt slope = 0.004840614281769426+-0.002903234811916315
theta slope = -0.11003182293444741+-0.011757249467541956
chi2/ndof = 0.000425576825113708