FROM TH2F
constant
0.03590917004187166+-0.019142102867545606
chi2/ndof = 0.006879429357608252
plane
0.026866627826006396+-0.05024264394670012
invpt slope = -0.00035082723963147087+-0.025665004343980467
theta slope = 0.014336635441670248+-0.04703196261376011
chi2/ndof = 0.006044900279318643
from tgraph2D
constant
0.04348039493413741+-0.0016790922381633212
chi2/ndof = 0.0003298640370764835
plane
0.03157717235057519+-0.0035123009735070327
invpt slope = 0.0038993574737247543+-0.001763234139502298
theta slope = 0.010787815531172626+-0.003962322360836186
chi2/ndof = 0.0002974471049469629