FROM TH2F
constant
0.019789028727856692+-0.015727773499275087
chi2/ndof = 0.023985779380120642
plane
0.06038611475841858+-0.10851863777519183
invpt slope = 0.011299836789853062+-0.012794500881382011
theta slope = -0.04510283235674862+-0.08312349184404892
chi2/ndof = 0.006225295255718861
from tgraph2D
constant
0.04108837074251963+-0.0037227738365506607
chi2/ndof = 0.0011780188283252253
plane
0.07564695269815969+-0.012136682377459827
invpt slope = 0.01719038200325985+-0.0014836064190331844
theta slope = -0.06542489210188969+-0.010464513651123879
chi2/ndof = 0.000397093373897743