FROM TH2F
constant
0.019855532303271292+-0.01708780624684497
chi2/ndof = 0.011636298961835734
plane
0.07454614302856441+-0.10904057499896863
invpt slope = 0.007078779866693717+-0.014784350825680151
theta slope = -0.05556320208809444+-0.09228399017356456
chi2/ndof = 0.0035000351963023926
from tgraph2D
constant
0.02904389080931533+-0.00222733372524058
chi2/ndof = 0.00036711514874415024
plane
0.09045297178450219+-0.004672063072621243
invpt slope = 0.00954781713093709+-0.0008076918533731914
theta slope = -0.07187201335133979+-0.004320212248387643
chi2/ndof = 6.313555497769394e-05