FROM TH2F
constant
24.666390174405024+-0.5484611531605273
chi2/ndof = 22.261936906147472
plane
17.25303131229265+-1.4997042335515267
invpt slope = 16.09288645495971+-0.6921056623446719
theta slope = -12.380317607209548+-1.5137269416930188
chi2/ndof = 12.757590521231451
from tgraph2D
constant
43.04641388197693+-2.4681706844723568
chi2/ndof = 590.9110539536567
plane
20.02888564015649+-4.360798763684164
invpt slope = 13.039307306592907+-1.9483601912945885
theta slope = 13.045882197593704+-6.41199620939549
chi2/ndof = 386.3339826081045