FROM TH2F
constant
0.007128604927468781+-0.014071844352807896
chi2/ndof = 0.00519534885241463
plane
0.03288005514125503+-0.12137034803793773
invpt slope = 0.0036593013311902465+-0.017966601827894987
theta slope = -0.023815218739665012+-0.09347015140750058
chi2/ndof = 0.0015092893028628863
from tgraph2D
constant
0.011195887104965005+-0.001126098478695778
chi2/ndof = 5.0723911348749926e-05
plane
0.03610449784683467+-0.004535074155460138
invpt slope = 0.003542482535619896+-0.0008198514114661708
theta slope = -0.025471773430233744+-0.003822011939614462
chi2/ndof = 2.029110981359228e-05