FROM TH2F
constant
0.004874520428763366+-0.008727220737717657
chi2/ndof = 0.025580988347567595
plane
0.0504737226583256+-0.09598804365094461
invpt slope = -0.005137447222729177+-0.006844069733346311
theta slope = -0.02013857976216419+-0.08366109180987846
chi2/ndof = 0.013169329771936517
from tgraph2D
constant
0.028800514202780975+-0.0023252794263290432
chi2/ndof = 0.0003730777843519584
plane
0.08323450086420804+-0.012388905561193068
invpt slope = 0.002811894351714649+-0.0014970614154914627
theta slope = -0.05401907415395463+-0.01083692847236533
chi2/ndof = 0.00027095659813513727