FROM TH2F
constant
0.014974462106836802+-0.013945376789815908
chi2/ndof = 0.01454778033427856
plane
0.0790554930191397+-0.08838536141537714
invpt slope = 0.0036653029412152295+-0.011405608879031115
theta slope = -0.055898760897169206+-0.07054234531032527
chi2/ndof = 0.005973070267669682
from tgraph2D
constant
0.027142446874200168+-0.0020952400418094213
chi2/ndof = 0.0003687625899456828
plane
0.08396525034557333+-0.005294775068001151
invpt slope = 0.007857689779630606+-0.0009018071911106875
theta slope = -0.0626658008792555+-0.004575270439380665
chi2/ndof = 9.47216753128898e-05