FROM TH2F
constant
0.033744893966897484+-0.01894698482045268
chi2/ndof = 0.014232162277126783
plane
0.0964719645087112+-0.13211030417566003
invpt slope = 0.0076485019172864545+-0.01233295448305408
theta slope = -0.06569839444896346+-0.10408735927176414
chi2/ndof = 0.004851785757143661
from tgraph2D
constant
0.04598869050541443+-0.0031033994302288185
chi2/ndof = 0.0009534777141879345
plane
0.13375192771995098+-0.010448314682219644
invpt slope = 0.008437829728529533+-0.001130259327249617
theta slope = -0.09637724129439522+-0.008522726635522773
chi2/ndof = 0.0003212605935069885