Neutrino emission properties for s15 (left) and s27 (right). Shown are the luminosities (top), angle-averaged energies (middle), and neutrinospheric radii (bottom) for ν _e , , and ν _x neutrino types. Here we show only the f _heat = 1.00 models for 1D, 2D, and 3D. For clarity reasons, we omit the 1D mean energies from the plots. The neutrino emission properties between 2D and 3D are remarkably similar, up until about 100 ms. At this point, 2D transitions toward explosion while 3D fails and the shock begins to recede.