FROM TH2F
constant
0.9510862301320315+-0.10640702574495707
chi2/ndof = 0.16138225079458451
plane
2.4451727712142284+-0.625703794218416
invpt slope = 0.0415177664226086+-0.08595944935587146
theta slope = -1.3353481181740812+-0.48806108608751575
chi2/ndof = 0.0662276014427263
from tgraph2D
constant
1.089032439446727+-0.04139771330161295
chi2/ndof = 0.15423935969916366
plane
2.5003030255728036+-0.1458022138296307
invpt slope = 0.05613640399482446+-0.02032129408174459
theta slope = -1.3581088278252549+-0.12201884382980498
chi2/ndof = 0.06226081207342973