FROM TH2F
constant
24.870848891171377+-0.6850264957242542
chi2/ndof = 29.243502684032606
plane
-20.93937829786819+-3.104586376631442
invpt slope = -16.106955571380897+-1.1167539598537068
theta slope = 85.57199997049497+-3.447956230111639
chi2/ndof = 16.053179932124536
from tgraph2D
constant
63.131119092351156+-5.886859385352396
chi2/ndof = 2079.3068057423197
plane
65.9056285551848+-18.96888506294541
invpt slope = -37.56590924117771+-4.7013414082261145
theta slope = 43.14207899280069+-18.717553697618442
chi2/ndof = 977.7461233176698