FROM TH2F
constant
0.048983146301059564+-0.019263552149418436
chi2/ndof = 0.026479462077208277
plane
0.09488133816052505+-0.12148231833584051
invpt slope = 0.01486969727841131+-0.009431176133558308
theta slope = -0.07163744071735298+-0.10300654015688784
chi2/ndof = 0.004491379478491108
from tgraph2D
constant
0.07252940030116196+-0.0038483223428805342
chi2/ndof = 0.002043722709616333
plane
0.10926725871254372+-0.009480964951802406
invpt slope = 0.017230572635281154+-0.0007398332105310284
theta slope = -0.08836447552660798+-0.008635657983499391
chi2/ndof = 0.0003971109781943429