FROM TH2F
constant
0.013946014998552884+-0.018009051343964518
chi2/ndof = 0.004475532753106432
plane
0.051587334699721016+-0.21136627158113888
invpt slope = -0.0011519792036322654+-0.01315265265752216
theta slope = -0.028178853584914988+-0.16990635328255138
chi2/ndof = 0.0037528422404411914
from tgraph2D
constant
0.017650936453805697+-0.0011822164853349656
chi2/ndof = 6.568888345574674e-05
plane
0.05581327256052984+-0.012251739430933148
invpt slope = 0.0009393556446345619+-0.0007848187773303451
theta slope = -0.0328252980559441+-0.010050294810515234
chi2/ndof = 5.442363778395058e-05