Shock radius (solid lines) and PNS radius (dashed lines) for the gray simulation (purple lines) compared to the simulations presented in O’Connor et al. (2018; semitransparent colored lines). The purple lines indicate the results from the simulation based on the original gray transport from Foucart et al. (2016) and the black lines represent the result from the simulation using the improvements detailed in this work. Time is given in seconds after bounce. The PNS radius is defined to be where the density drops below 10¹¹ g cm⁻³.