FROM TH2F
constant
0.00352393576593419+-0.006809374117320556
chi2/ndof = 0.0007753368639082603
plane
0.0011987067778682135+-0.016369024449272466
invpt slope = 0.002306868586452921+-0.010116741810433476
theta slope = 0.0004983596734320229+-0.01935086734718363
chi2/ndof = 8.239325477703319e-05
from tgraph2D
constant
0.0037690422984820032+-0.00018913158677208794
chi2/ndof = 3.3266804116869086e-06
plane
0.0012860971172133394+-0.00012053813489817701
invpt slope = 0.002180033642066237+-6.99388793317554e-05
theta slope = 0.0007087221406412383+-0.00015155925282995915
chi2/ndof = 2.797055801421404e-07