FROM TH2F
constant
0.021981229413940626+-0.018679090002720968
chi2/ndof = 0.01811477724467993
plane
0.07135312754413879+-0.12751240974727918
invpt slope = 0.008997298567965474+-0.019248850264892405
theta slope = -0.05305904010301229+-0.10178413784578699
chi2/ndof = 0.00838008963734404
from tgraph2D
constant
0.03761684074348059+-0.004274016166154195
chi2/ndof = 0.001223903350652069
plane
0.11178632999515042+-0.016976692792868547
invpt slope = 0.012811506635003113+-0.0030133449657163986
theta slope = -0.090152239224678+-0.0144642298288885
chi2/ndof = 0.0006437211094731926