FROM TH2F
constant
0.007818972504557445+-0.01348467907965645
chi2/ndof = 0.00906334862921514
plane
-0.0006597089021438034+-0.19463889956141212
invpt slope = 0.00537044209143418+-0.009106721626759512
theta slope = 0.0013441621852736437+-0.1653329225193319
chi2/ndof = 0.0008090419131086192
from tgraph2D
constant
0.015643988348891174+-0.0013271753169045812
chi2/ndof = 8.102413880232037e-05
plane
0.00037509170946886357+-0.007293668749728626
invpt slope = 0.0049031192576060555+-0.00030738425196314686
theta slope = 0.002152531317547491+-0.006175410684497454
chi2/ndof = 1.2315844778137248e-05