FROM TH2F
constant
0.06182262369333849+-0.021399657957796567
chi2/ndof = 0.02739517624018997
plane
0.005301874311255577+-0.044857684239719246
invpt slope = 0.03393656048765813+-0.02206133667773244
theta slope = 0.024338910039357706+-0.04998851676703748
chi2/ndof = 0.005896452222893658
from tgraph2D
constant
0.07971276952301612+-0.003919771599547695
chi2/ndof = 0.002381514453954946
plane
0.0015144752924888855+-0.003329138444193439
invpt slope = 0.03564431014901962+-0.0012791476932846933
theta slope = 0.032564317818798795+-0.003443455565003012
chi2/ndof = 0.000327012463053938