4 ms·1.5 gal/(m²s) or 1.58 µm/s Sort-of related: https://what-if.xkcd.com/11/ https://what-if.xkcd.com/11/by ginko 7y ago1.5 gal/(m²s) or 1.58 µm/s Sort-of related: https://what-if.xkcd.com/11/ https://what-if.xkcd.com/11/