FROM TH2F
constant
0.023894766003361927+-0.02330370922752771
chi2/ndof = 0.0023170101471393424
plane
-0.008658863337535273+-0.21536883108273924
invpt slope = 0.004530368173169487+-0.022356003709294327
theta slope = 0.022030759477265904+-0.18448346145613279
chi2/ndof = 0.000983969613108413
from tgraph2D
constant
0.025173271185385395+-0.0010757277380244834
chi2/ndof = 5.670231815125226e-05
plane
-0.008558675993454914+-0.005196031446887508
invpt slope = 0.00501593793455417+-0.0005070458147571968
theta slope = 0.02200950976044886+-0.004372578375366465
chi2/ndof = 1.6082141431671854e-05