condition mean min max 4 h after light 7.626405 7.26865 7.98416 8 h after light 7.884875 7.7924 7.97735 12 h after light 9.615685 8.85397 10.3774 4 h after dark 14.950199999999999 14.4033 15.4971 8 h after dark 14.364799999999999 14.0588 14.6708 12 h after dark 12.3513 11.4685 13.2341