condition mean min max 4 h after light 33.64765 28.0856 39.2097 8 h after light 38.1712 37.2232 39.1192 12 h after light 48.689099999999996 43.721 53.6572 4 h after dark 50.7664 50.6097 50.9231 8 h after dark 44.277550000000005 44.1846 44.3705 12 h after dark 38.00495 37.4634 38.5465