FROM TH2F
constant
0.037878124513475685+-0.018472800677087012
chi2/ndof = 0.012809327557545986
plane
0.036719034763597946+-0.1465667629737718
invpt slope = 0.006693771191737259+-0.008461412522096956
theta slope = -0.016862328056114324+-0.12326403011854238
chi2/ndof = 0.006753099866114799
from tgraph2D
constant
0.04941181957383061+-0.002509365167312636
chi2/ndof = 0.0007241450574328088
plane
0.07462100019106091+-0.011914295192535297
invpt slope = 0.008015394433059512+-0.0007399106434228198
theta slope = -0.04932391770894923+-0.009983401053811475
chi2/ndof = 0.0003115106156167031