FROM TH2F
constant
0.020936639128988032+-0.01705246769801523
chi2/ndof = 0.0033698314177862377
plane
0.03149877052257534+-0.09256969234093088
invpt slope = 0.0051003829255443014+-0.013435134207535875
theta slope = -0.016881218393855084+-0.08427256967761383
chi2/ndof = 0.0011933844811426368
from tgraph2D
constant
0.022623151931415623+-0.000980957700001749
chi2/ndof = 7.601996272667615e-05
plane
0.03149913881432575+-0.0028911787939407494
invpt slope = 0.005410709499908049+-0.0004144914328202289
theta slope = -0.01697850646747592+-0.0027825875596029356
chi2/ndof = 2.3604279920355852e-05