FROM TH2F
constant
25.832011977960025+-0.5647244712111065
chi2/ndof = 27.6051533581281
plane
95.07055986776655+-2.763571461706491
invpt slope = 1.9046387963656546+-0.495530438200317
theta slope = -57.72159473913953+-2.1906191748905357
chi2/ndof = 19.34021200094764
from tgraph2D
constant
50.38023514281254+-3.297030418189043
chi2/ndof = 967.4664519395207
plane
48.28183984696535+-13.612817337661184
invpt slope = 12.877070934049293+-2.456947647416037
theta slope = -17.29428028116331+-12.20883391536313
chi2/ndof = 749.7633270108839