FROM TH2F
constant
0.04308494801454598+-0.017931242635445793
chi2/ndof = 0.03051524219691976
plane
0.11638102632431588+-0.11484116338411898
invpt slope = 0.004751783203069921+-0.006958239130443664
theta slope = -0.07427412895908375+-0.09486298607708084
chi2/ndof = 0.022795966380018177
from tgraph2D
constant
0.07075381977181415+-0.0038443769057019896
chi2/ndof = 0.002069092730174935
plane
0.1308863662284294+-0.01299171403170084
invpt slope = 0.014582841638320895+-0.0009972087175320833
theta slope = -0.10003853019112538+-0.01158330707800751
chi2/ndof = 0.00074002450287765