condition mean min max 4 h after light 46.97795 41.8013 52.1546 8 h after light 41.96615 41.0325 42.8998 12 h after light 45.3048 45.1355 45.4741 4 h after dark 42.947266666666664 37.6904 46.5534 8 h after dark 52.224 45.1213 56.8774 12 h after dark 45.11853333333333 42.7696 46.6739