FROM TH2F
constant
0.022396049422627715+-0.01414088847373655
chi2/ndof = 0.03648729021829428
plane
0.12021543473672544+-0.10617789944181587
invpt slope = 0.008369303036982806+-0.007787646622671796
theta slope = -0.09255381559866281+-0.08341690581222998
chi2/ndof = 0.00798473780694183
from tgraph2D
constant
0.05625044726602159+-0.003440726314691506
chi2/ndof = 0.001385115916186535
plane
0.15764857575060523+-0.009714731312677133
invpt slope = 0.011700820597234811+-0.0007543308077490336
theta slope = -0.13168722371244684+-0.008918618304531742
chi2/ndof = 0.0002935276460471688