FROM TH2F
constant
0.042743469495153584+-0.018952277409050942
chi2/ndof = 0.020251963713090796
plane
0.11365105833453268+-0.1189993670311233
invpt slope = 0.010501082708329196+-0.009867404100867583
theta slope = -0.08119926227673384+-0.09841475101911766
chi2/ndof = 0.005527212351318401
from tgraph2D
constant
0.06013205908580617+-0.0032300193127164202
chi2/ndof = 0.0013145611201521726
plane
0.13827983689483722+-0.009487806713554226
invpt slope = 0.012155827447051498+-0.0008327939722346611
theta slope = -0.10335197619736879+-0.00827316863137797
chi2/ndof = 0.0003566384828808867