FROM TH2F
constant
0.00990757861872819+-0.013672433787774522
chi2/ndof = 0.011175095819188418
plane
-0.03356882359252252+-0.08018822293727158
invpt slope = 0.0011073023931787041+-0.014095985564923048
theta slope = 0.04015937861072909+-0.08290580402611492
chi2/ndof = 0.004765432823263711
from tgraph2D
constant
0.0200612654262472+-0.0009485979148187011
chi2/ndof = 5.3090442235906235e-05
plane
0.013439180578721725+-0.00703841031335439
invpt slope = 0.0020171299913860513+-0.0006302868273538702
theta slope = 0.0025116662793515966+-0.005958296162660663
chi2/ndof = 4.578021802493743e-05