FROM TH2F
constant
26.777093702808184+-0.5975181306448444
chi2/ndof = 17.623929583441072
plane
51.780749072243935+-2.421910725704576
invpt slope = -4.986567930571713+-0.6399427782786312
theta slope = -13.847594347758534+-1.965950971527045
chi2/ndof = 16.311016295656884
from tgraph2D
constant
43.304235302564166+-2.440477643554438
chi2/ndof = 494.3422838475968
plane
45.84413777615179+-11.072684189312517
invpt slope = -1.8830108362407576+-2.268946411095629
theta slope = 0.34020316278983653+-10.373558142494138
chi2/ndof = 502.25112124143186