condition mean min max 4 h after light 506.962826 208.385903 805.539749 8 h after light 400.940419 358.725704 443.155134 12 h after light 587.770668 370.001587 805.539749 4 h after dark 2037.693595 805.539749 3269.847441 8 h after dark 2678.9561009999998 2142.63967 3215.272532 12 h after dark 2257.005409 2257.005409 2257.005409