FROM TH2F
constant
0.011829003344593267+-0.017880234704291696
chi2/ndof = 0.0015661452273159065
plane
0.005792543509743283+-0.16553315432917218
invpt slope = 0.0033713546189558124+-0.020022205350687817
theta slope = 0.001534310567821582+-0.14307107693319188
chi2/ndof = 0.0007562129654882533
from tgraph2D
constant
0.0119446805126159+-0.0008541065216912288
chi2/ndof = 3.0638913916658233e-05
plane
0.0052078102916101356+-0.005046030669175733
invpt slope = 0.004322095046552836+-0.0005618719805240212
theta slope = 0.0009484917723049524+-0.004278643912711901
chi2/ndof = 1.270285303322632e-05