FROM TH2F
constant
0.038003740442027846+-0.019208548975715122
chi2/ndof = 0.014046581792148674
plane
0.055537614969359786+-0.1519261240982857
invpt slope = 0.008107369844770328+-0.00977021930027155
theta slope = -0.035564069298324674+-0.1281962345529002
chi2/ndof = 0.006302272169944859
from tgraph2D
constant
0.050616141315488014+-0.002960948514370577
chi2/ndof = 0.0009380921232188343
plane
0.1370376753360006+-0.014262392953939624
invpt slope = 0.0060027020813786915+-0.0010370575574105312
theta slope = -0.09628100361341832+-0.011748432458581641
chi2/ndof = 0.0004528440557760539