FROM TH2F
constant
22.444545001124403+-0.5831542362471005
chi2/ndof = 30.257366558613338
plane
-32.28621642269152+-2.599887084872545
invpt slope = -7.8995437510320885+-0.6850705215447587
theta slope = 74.86866396059523+-2.9149551524262645
chi2/ndof = 20.64433797242827
from tgraph2D
constant
58.74909345905333+-5.054700236338657
chi2/ndof = 1865.149599083917
plane
-18.345740950254868+-22.864693599552663
invpt slope = -14.823631397485626+-3.593641995457
theta slope = 95.28676782855288+-21.103262189390055
chi2/ndof = 1287.2489067822823