condition mean min max 4 h after light 22.400542 22.325368 22.475716 8 h after light 22.800356 22.360502 23.24021 12 h after light 22.8722015 18.917962 26.826441 4 h after dark 18.546142 18.535871 18.556413 8 h after dark 17.944578 17.642452 18.246704 12 h after dark 21.707772 21.707772 21.707772