FROM TH2F
constant
0.022402913730382407+-0.015865627371363388
chi2/ndof = 0.0022697496650712686
plane
0.02221693164717032+-0.10760490871620974
invpt slope = 0.0023380893708015655+-0.00876427253726868
theta slope = -0.005513532347032946+-0.09211892947122093
chi2/ndof = 0.0014701072137267613
from tgraph2D
constant
0.02395075215171118+-0.0007550480694983112
chi2/ndof = 5.358917320175671e-05
plane
0.028064549983548803+-0.004022643709140783
invpt slope = 0.0023458314215330576+-0.00032941048400332795
theta slope = -0.009675639633492834+-0.003445644852815176
chi2/ndof = 3.375843220648555e-05