FROM TH2F
constant
0.02605580571558531+-0.020838988184947217
chi2/ndof = 0.0073067329115404775
plane
0.05977716740088403+-0.1523472777542862
invpt slope = 0.008944313203809463+-0.019065811555655763
theta slope = -0.03853476573584757+-0.11994544616296131
chi2/ndof = 0.001972617166386297
from tgraph2D
constant
0.03160425772373998+-0.0020681470311747067
chi2/ndof = 0.0002780200892544777
plane
0.06494365160255282+-0.006596559874134371
invpt slope = 0.009671716395352343+-0.0008908934430557706
theta slope = -0.0423160162956222+-0.005354203367475313
chi2/ndof = 7.706731310227792e-05