FROM TH2F
constant
0.021417512140377213+-0.01955647141211511
chi2/ndof = 0.005952177757824632
plane
-0.00969005791845464+-0.157464890640142
invpt slope = 0.0037463352767159253+-0.013991709778908429
theta slope = 0.01970750399360407+-0.12523619738848474
chi2/ndof = 0.004400882836445469
from tgraph2D
constant
0.02593237777051933+-0.0016661091527375288
chi2/ndof = 0.00016933110223889085
plane
-0.0020616392630896617+-0.012239346583742336
invpt slope = 0.004523133984432445+-0.000977198357509175
theta slope = 0.015180553755184997+-0.009683926164049984
chi2/ndof = 0.00012313346143933386