FROM TH2F
constant
0.026520904358604942+-0.021959013218633503
chi2/ndof = 0.013700407971008634
plane
0.07320106968489451+-0.12835586362124454
invpt slope = 0.01201581092898712+-0.026520478577064157
theta slope = -0.05867345192176496+-0.11627722267486497
chi2/ndof = 0.004065862276171902
from tgraph2D
constant
0.03691804206099782+-0.0034990688641456783
chi2/ndof = 0.0007468524579154829
plane
0.11091129948839178+-0.009369520881753154
invpt slope = 0.011237333017181486+-0.0020041449084161594
theta slope = -0.09399204228524055+-0.008963160395634315
chi2/ndof = 0.0002060958049501975