Left: Time-averaged angular profiles of isotropic-equivalent mass-loss rate ﹩{\dot{M}}_{{\rm{iso}}}﹩ through a shell of radius R = 120 km for model B3P1 at three different grid resolutions with smallest grid step size Δx = 340 m (red), Δx = 225 m (fiducial resolution, black), Δx = 150 m (blue), as well as one from a simulation without using symmetries (labeled “full domain—fd”) and with resolution Δx = 340 m (orange). Right: Scale heights of temperature (﹩T| \frac{dT}{dr}{| }^{-1}﹩), optical depth of electron antineutrinos (﹩{\tau }_{{\bar{\nu }}_{e}}| \frac{d{\tau }_{{\bar{\nu }}_{e}}}{dr}{| }^{-1}﹩) and magnetic field (﹩B| \frac{dB}{dr}{| }^{-1}﹩) in the polar direction in units of the grid resolution plotted as a function of the z-coordinate, cylindrically averaged within a cylindrical radius of 5 km from 2D cross-sectional data of the xz-plane for model B3P1.