FROM TH2F
constant
20.954145058851164+-0.6172393830117758
chi2/ndof = 44.597122652721886
plane
93.22320002708193+-6.076032539613221
invpt slope = -15.242151134591037+-0.5642807792365712
theta slope = -12.60142787107365+-5.596970711506018
chi2/ndof = 21.85308480747721
from tgraph2D
constant
69.21457791829175+-5.851792953173274
chi2/ndof = 2020.3653648738784
plane
133.7495061638265+-34.713422560827375
invpt slope = -15.978180976964813+-3.5835338883740926
theta slope = -26.552453615247053+-29.671420712423018
chi2/ndof = 1490.9037331865857