FROM TH2F
constant
42.843141250668424+-0.7058158825625115
chi2/ndof = 13.976737032491078
plane
44.23952195956382+-4.276693259204844
invpt slope = 2.942963101452092+-0.4297333593716716
theta slope = -8.327330485323177+-3.9474747903029415
chi2/ndof = 13.747698264863514
from tgraph2D
constant
56.88139238589511+-2.2588890753341175
chi2/ndof = 459.2321871660824
plane
89.37342588786805+-13.466368939299423
invpt slope = -0.5408676406944769+-1.3892780861083243
theta slope = -27.83396850348051+-11.47783675591761
chi2/ndof = 439.18935319400964