FROM TH2F
constant
29.70856045321544+-1.2187813677317885
chi2/ndof = 17.368885173254125
plane
-78.95261358194276+-14.144664764486278
invpt slope = -5.917246844304266+-2.596331808875783
theta slope = 111.63982771756056+-10.7422354780802
chi2/ndof = 8.283553966780312
from tgraph2D
constant
49.23818299628231+-5.514673829654236
chi2/ndof = 669.055804593211
plane
-43.98763415332573+-46.702060125410746
invpt slope = -13.4047173526154+-5.61745082205476
theta slope = 96.78256517452016+-37.33242925766107
chi2/ndof = 328.4768510014021