FROM TH2F
constant
0.009205243786395168+-0.014983929428977994
chi2/ndof = 0.0025382098416738145
plane
0.007314323674947373+-0.08691362047178433
invpt slope = 0.0022816523098538027+-0.01378390303441636
theta slope = -0.0012583178049270713+-0.07315382427351896
chi2/ndof = 0.00195006140555499
from tgraph2D
constant
0.010879278135558274+-0.0008150157959521955
chi2/ndof = 2.989128364436097e-05
plane
0.007831973361789715+-0.0049043574994411376
invpt slope = 0.0025056329429801395+-0.0005782493448599004
theta slope = -0.0008227873358817566+-0.004196947353504454
chi2/ndof = 2.1949897127005733e-05