FROM TH2F
constant
0.017049351546412423+-0.015178822169109403
chi2/ndof = 0.012428069257816903
plane
0.06887449859782319+-0.09830540346724462
invpt slope = 0.005568712013119127+-0.013099367346221923
theta slope = -0.04851271708661222+-0.0772204679401714
chi2/ndof = 0.004112513855294734
from tgraph2D
constant
0.027030760796737087+-0.0021908994615490807
chi2/ndof = 0.00038880327650137915
plane
0.09044523641477674+-0.004874355682293257
invpt slope = 0.007681610003082288+-0.0008299565761617177
theta slope = -0.06842324399983449+-0.004216096214421829
chi2/ndof = 7.677961797540521e-05