FROM TH2F
constant
26.052661989577675+-0.6702117785523962
chi2/ndof = 86.7224691973404
plane
-98.43915704885059+-3.283524590976966
invpt slope = -32.45908107918957+-0.6986687023361609
theta slope = 206.8709751588747+-4.130619187006608
chi2/ndof = 38.29159480075324
from tgraph2D
constant
113.74809727050382+-7.600600742353841
chi2/ndof = 3639.4552919453417
plane
-84.41592779842765+-38.671633767267
invpt slope = -9.503955805191902+-5.332806368345073
theta slope = 189.598754350009+-35.016161113188076
chi2/ndof = 2522.575234148726