FROM TH2F
constant
0.004876197825252392+-0.011181713351485045
chi2/ndof = 0.003225961334947564
plane
-0.011336216118129214+-0.10217510152980172
invpt slope = 0.0026189716045260077+-0.012389413294667355
theta slope = 0.010914944297623625+-0.08725280568820426
chi2/ndof = 0.0004712090000474475
from tgraph2D
constant
0.007637362934983474+-0.0005517149525909064
chi2/ndof = 1.3393133112139648e-05
plane
-0.00210355395856196+-0.003649774791473718
invpt slope = 0.002288667749436662+-0.00028859681537723525
theta slope = 0.004749468093916377+-0.0028588288584870153
chi2/ndof = 4.871682446371525e-06