FROM TH2F
constant
0.5190994574034307+-0.06089214461695068
chi2/ndof = 0.5681445889664035
plane
-0.43209432585129426+-0.24286360151278122
invpt slope = -0.06865687464640337+-0.02164945929132094
theta slope = 1.2984862678801723+-0.2697939586685045
chi2/ndof = 0.3945248928751993
from tgraph2D
constant
1.0816612021751335+-0.04951748854263842
chi2/ndof = 0.3825091409223887
plane
0.06931374833705678+-0.1573296115623519
invpt slope = 0.09022289183275684+-0.013877543131825177
theta slope = 0.6518685816528635+-0.1341314691721395
chi2/ndof = 0.27609681968491895