FROM TH2F
constant
0.0241664845382016+-0.017380479179338774
chi2/ndof = 0.04218329651311769
plane
0.004083534066899299+-0.03964669159290299
invpt slope = 0.03457395583552023+-0.02465846397403521
theta slope = -0.008288576560491664+-0.050288447397731625
chi2/ndof = 0.01708046392550672
from tgraph2D
constant
0.055846358929921014+-0.00618887853319365
chi2/ndof = 0.0036770128802941266
plane
0.0013157273986583668+-0.007454986723788379
invpt slope = 0.05260128762242186+-0.0034924808629921973
theta slope = -0.01569216392495837+-0.010709472615591352
chi2/ndof = 0.0010920835232138876