FROM TH2F
constant
0.026319701880091997+-0.021488349302737235
chi2/ndof = 0.0010854524506726997
plane
0.0362160868734884+-0.1961781467349612
invpt slope = -0.0011684650493157744+-0.012857767653110117
theta slope = -0.005591581730484853+-0.16014148023302371
chi2/ndof = 0.0009307576446467771
from tgraph2D
constant
0.027193808500460662+-0.0006787393296633611
chi2/ndof = 2.8562598813153677e-05
plane
0.03608765994433096+-0.006058446180566994
invpt slope = -0.0008671863561179312+-0.00038649550001500525
theta slope = -0.00566040359227553+-0.004895708516617226
chi2/ndof = 2.670626131364414e-05