FROM TH2F
constant
0.03487045160752478+-0.016976028701826625
chi2/ndof = 0.07560613590881828
plane
-0.0072885794347858236+-0.03513200722423498
invpt slope = 0.05056175070240359+-0.019334890245259063
theta slope = -0.004988554051791852+-0.04820378226616743
chi2/ndof = 0.016985685364398335
from tgraph2D
constant
0.096687033299615+-0.0075609086617903975
chi2/ndof = 0.007946260235544145
plane
-0.007362428109768381+-0.006947594319759185
invpt slope = 0.05846522508507179+-0.0025877082663601225
theta slope = -0.00250885358045185+-0.009244474244458597
chi2/ndof = 0.0014870997057155387