FROM TH2F
constant
29.480499504076402+-0.4762069642199604
chi2/ndof = 21.23419701087899
plane
60.09264250530552+-2.2557604738084875
invpt slope = -2.651937205028149+-0.20203230240643605
theta slope = -16.422569612388084+-1.9665846454814386
chi2/ndof = 18.573507975795636
from tgraph2D
constant
49.748988104272456+-2.320520393388194
chi2/ndof = 737.7196412110343
plane
69.80846890073826+-11.904213120602005
invpt slope = -1.0178141503651394+-1.0458575618011219
theta slope = -14.649263017429783+-10.672113930199002
chi2/ndof = 726.6435958793109