condition mean min max 4 h after light 504.081676 501.477618 506.685734 8 h after light 406.921489 362.30898 451.533998 12 h after light 445.77429600000005 281.224136 610.324456 4 h after dark 217.4173355 160.478338 274.356333 8 h after dark 277.9462855 108.660514 447.232057 12 h after dark 311.54467 311.54467 311.54467