FROM TH2F
constant
0.017948314825905764+-0.02202474948291012
chi2/ndof = 0.0074137072063448295
plane
0.011125807121629635+-0.21188492230133302
invpt slope = 0.004939186120421538+-0.022718672809604257
theta slope = 0.0006480822236169213+-0.17890561719364612
chi2/ndof = 0.006456170882194051
from tgraph2D
constant
0.02279648101107575+-0.0024168354778068297
chi2/ndof = 0.00024532593652247157
plane
-0.006973257471872409+-0.016753468985694363
invpt slope = 0.010476616981298684+-0.0018854838445568113
theta slope = 0.013882721405096029+-0.014094785274222834
chi2/ndof = 0.00014126037111493326