FROM TH2F
constant
11.59654793411421+-0.32177726144870633
chi2/ndof = 12.87693777230776
plane
64.88385107730953+-2.4261778189654586
invpt slope = -2.746375023086477+-0.15792457868879942
theta slope = -37.138325456215895+-1.9089190169082642
chi2/ndof = 8.110637529435017
from tgraph2D
constant
24.957141327869113+-2.2416607837957088
chi2/ndof = 587.9300385133008
plane
114.24414852575936+-9.29244462967872
invpt slope = -6.1274103628173675+-0.7215409385338347
theta slope = -65.91431699289792+-8.530937607466209
chi2/ndof = 268.563672069108