FROM TH2F
constant
0.02513026786093871+-0.019815661362323423
chi2/ndof = 0.006727796895855276
plane
0.07913780000830196+-0.14578952551097138
invpt slope = 0.0041901699029890035+-0.0171550256791405
theta slope = -0.05006783492296479+-0.11456488167086981
chi2/ndof = 0.00267728540557311
from tgraph2D
constant
0.030315691022606374+-0.001969877455354844
chi2/ndof = 0.0002677487860490755
plane
0.09425922654338617+-0.006103860418543189
invpt slope = 0.004395080943222599+-0.0008663794119611958
theta slope = -0.06149223234191605+-0.004902900539168346
chi2/ndof = 7.07876123992492e-05