FROM TH2F
constant
0.04002202310554114+-0.019523373806618942
chi2/ndof = 0.02391701358758141
plane
0.0552220432563203+-0.12039805299255855
invpt slope = 0.007668482590192848+-0.009186729012485564
theta slope = -0.0326468818202412+-0.11274350144291592
chi2/ndof = 0.01699292643994013
from tgraph2D
constant
0.06053725868525438+-0.0034106677148752276
chi2/ndof = 0.0012912246229042754
plane
0.11786600757089435+-0.012958319506593098
invpt slope = 0.012475687567227639+-0.0010600301048120295
theta slope = -0.09392050689069237+-0.012429412128205801
chi2/ndof = 0.0004994340267343143