FROM TH2F
constant
0.01785317030994607+-0.011950956541426753
chi2/ndof = 0.04994935538513432
plane
0.05205383251888955+-0.07172002709396451
invpt slope = -0.00011625853351089502+-0.004722335501430317
theta slope = -0.03037008530223223+-0.06084356263720971
chi2/ndof = 0.04872584619880663
from tgraph2D
constant
0.06383007108464464+-0.008087922176706258
chi2/ndof = 0.009092613452041756
plane
0.1592124239928035+-0.033288111290585995
invpt slope = 0.006743074973928035+-0.0025742615362848325
theta slope = -0.1142396073021674+-0.029847753443899044
chi2/ndof = 0.008040091660342325