FROM TH2F
constant
60.396726312885164+-1.0479133055144105
chi2/ndof = 34.6103264589561
plane
-43.89186681744795+-6.8446031126573
invpt slope = -21.80584910975068+-1.1371957683202318
theta slope = 149.12948791821225+-5.877933591098243
chi2/ndof = 13.973716983392714
from tgraph2D
constant
95.05054340187439+-5.263009296801161
chi2/ndof = 1661.9560101174843
plane
-49.25436815756904+-25.565418744989884
invpt slope = -8.549421304564959+-3.5551919847231392
theta slope = 142.52040188330977+-21.584838313660605
chi2/ndof = 892.5060286339816