FROM TH2F
constant
0.009819242491805354+-0.008971376379923564
chi2/ndof = 0.00542410493958791
plane
0.0018159098193471783+-0.019043545411974408
invpt slope = 0.0053117910520367444+-0.009029884244638053
theta slope = 0.0023608457201012784+-0.020509724992632965
chi2/ndof = 0.002077528410414495
from tgraph2D
constant
0.013663306299562375+-0.000992532572982348
chi2/ndof = 0.00013988716899509263
plane
0.0007247754466793156+-0.0010950502593593638
invpt slope = 0.0069338164925308934+-0.00041020878713197403
theta slope = 0.0031106454023543213+-0.0012394214281564915
chi2/ndof = 3.7756761995726685e-05