FROM TH2F
constant
0.01871914072808969+-0.015393217609093419
chi2/ndof = 0.006782410406144206
plane
0.032535967098886606+-0.09930788107498882
invpt slope = 0.0029081918073802274+-0.009772520432455224
theta slope = -0.018025528415616873+-0.0809247375439252
chi2/ndof = 0.0041808911206004575
from tgraph2D
constant
0.024298389731278035+-0.0008721339313292525
chi2/ndof = 6.465249550444627e-05
plane
0.027987641445498118+-0.004665269163502508
invpt slope = 0.00262871218994679+-0.000451130778046828
theta slope = -0.009613784566992647+-0.00423743712347354
chi2/ndof = 4.452720033820098e-05