FROM TH2F
constant
0.020014707878199613+-0.02357889114751267
chi2/ndof = 0.0037475116555437614
plane
0.020221844692418584+-0.1657578796005261
invpt slope = 0.0028325079149906494+-0.027395860728469414
theta slope = -0.003568252530289978+-0.1321548620285428
chi2/ndof = 0.003600457908405867
from tgraph2D
constant
0.022446750113831484+-0.001537447810618471
chi2/ndof = 9.454983081515032e-05
plane
0.03915347892184258+-0.009890287744288701
invpt slope = 0.004657595458876863+-0.0014302356775186668
theta slope = -0.019660857165580903+-0.008048635317927579
chi2/ndof = 6.6197900669264e-05