FROM TH2F
constant
0.014043936194653064+-0.020629440711558318
chi2/ndof = 0.004799690389459053
plane
-0.03676904057522621+-0.15130765870770232
invpt slope = 0.006047198391449799+-0.02988758483499417
theta slope = 0.039931919400997+-0.12229851996043758
chi2/ndof = 0.0012863092897439717
from tgraph2D
constant
0.01812200652168157+-0.0013276602838606898
chi2/ndof = 6.345654585631089e-05
plane
-0.030106606292255735+-0.00613823825937464
invpt slope = 0.006524102448077455+-0.0008194131620486765
theta slope = 0.034215374823131264+-0.004975515646011941
chi2/ndof = 1.9082843921257595e-05