FROM TH2F
constant
0.022177915256090155+-0.018615314276353268
chi2/ndof = 0.02936539017337978
plane
0.040625940127002685+-0.13006789471006497
invpt slope = -0.00027748914078024197+-0.015107012928927065
theta slope = -0.016463597132385762+-0.10913317215168504
chi2/ndof = 0.02995218219495376
from tgraph2D
constant
0.04946995348933858+-0.006761736101467748
chi2/ndof = 0.003246196331907057
plane
0.0579864573676669+-0.019947510817972972
invpt slope = 0.024100802333649494+-0.0018008403158425495
theta slope = -0.050264112946139854+-0.019033880608409146
chi2/ndof = 0.0009155209368238713