FROM TH2F
constant
0.027092137137900058+-0.019815137360010247
chi2/ndof = 0.008663445923304662
plane
0.019416799296246477+-0.15852363643772807
invpt slope = 0.006752223430431561+-0.013432925628599154
theta slope = -0.005807003844234977+-0.1281279949371483
chi2/ndof = 0.005015782120125999
from tgraph2D
constant
0.03417632310206945+-0.002281084653032458
chi2/ndof = 0.0003798443451730518
plane
0.04216764343749921+-0.011192159441634075
invpt slope = 0.009177197745195122+-0.0008738124360978429
theta slope = -0.026446431849194037+-0.009376487956998953
chi2/ndof = 0.00014948655006089248