FROM TH2F
constant
53.280465336401896+-0.7917253317652972
chi2/ndof = 16.84197345259923
plane
-14.352491485385361+-3.9470478013580395
invpt slope = -0.5482484178890361+-0.5352788643220685
theta slope = 65.14518123982941+-3.6410890544997674
chi2/ndof = 13.262875514237386
from tgraph2D
constant
70.93230693931896+-3.842034876034633
chi2/ndof = 1313.7496461615874
plane
22.948319755010747+-23.418076349147587
invpt slope = 1.7036411908221851+-2.3017666071542227
theta slope = 38.3210044481433+-20.022364246052458
chi2/ndof = 1279.0077741844377