FROM TH2F
constant
0.02507907987582984+-0.024150246697540182
chi2/ndof = 0.006642946868896286
plane
0.080026632206014+-0.1685311939034691
invpt slope = 0.0053546846282219425+-0.029331775327878753
theta slope = -0.053688699053478145+-0.13216175969545454
chi2/ndof = 0.001183151959146459
from tgraph2D
constant
0.03020341003561989+-0.0022387723854122065
chi2/ndof = 0.00023055668250927095
plane
0.08766174221738894+-0.004761822389523909
invpt slope = 0.004604275637167645+-0.0010008768126230445
theta slope = -0.05868413259040657+-0.0039033630626428444
chi2/ndof = 3.395382163920566e-05