FROM TH2F
constant
4.525771518277284+-0.39504567705520705
chi2/ndof = 79.18616628965813
plane
-29.20896109441895+-3.5043069397593363
invpt slope = 3.6352641105797883+-0.5648287534978014
theta slope = 30.546355923283663+-3.1934748466597846
chi2/ndof = 81.6663272041579
from tgraph2D
constant
73.0903042193365+-11.731880898737074
chi2/ndof = 4542.021971398731
plane
-221.023379381155+-78.15589132028565
invpt slope = 39.70850478394136+-11.96366202619861
theta slope = 238.4836830325722+-71.8855724900951
chi2/ndof = 2793.8821653401674