FROM TH2F
constant
0.022898199686030785+-0.018769123451541924
chi2/ndof = 0.008114583072629819
plane
0.06815907582034013+-0.13155143162912963
invpt slope = 0.00028451530310448584+-0.013169164885755457
theta slope = -0.03761401671310168+-0.1064097763211115
chi2/ndof = 0.006359914224915571
from tgraph2D
constant
0.02953376890220269+-0.001867395442582432
chi2/ndof = 0.00024410160173245793
plane
0.07617916703026971+-0.008210087219906098
invpt slope = 0.004045781269212895+-0.0011081784539150048
theta slope = -0.046169327209237984+-0.006620211491258603
chi2/ndof = 0.0001293295576528557