FROM TH2F
constant
0.03319071130683438+-0.025264261509060797
chi2/ndof = 0.008509235096562002
plane
0.008370899759608813+-0.0958697557148285
invpt slope = -0.006784020057594314+-0.0351406808311655
theta slope = 0.03903850880557207+-0.10173341675474047
chi2/ndof = 0.005513580858850598
from tgraph2D
constant
0.04241198086888105+-0.001681279785072233
chi2/ndof = 0.00016960210294073342
plane
0.02115213597045004+-0.006769913495316075
invpt slope = -0.0027791736286006345+-0.0018191217302376374
theta slope = 0.02588238719877695+-0.006909938034129273
chi2/ndof = 0.00013796405035284114