FROM TH2F
constant
0.045237578098056175+-0.019497377108508962
chi2/ndof = 0.06008444397445022
plane
-0.0037566903723929177+-0.042434267489919505
invpt slope = 0.031216399619075394+-0.01848792124446764
theta slope = 0.01810289456241519+-0.06034274774985898
chi2/ndof = 0.03254324861039958
from tgraph2D
constant
0.0941379525433218+-0.007321763107125909
chi2/ndof = 0.007237109025193971
plane
-0.010433835620418858+-0.007663381422330584
invpt slope = 0.05038398419765014+-0.0028701937959675398
theta slope = 0.020174111558502655+-0.01102219535380283
chi2/ndof = 0.0017528007514942734