condition mean min max 4 h after light 167.268054 165.8599 168.676208 8 h after light 191.3956865 157.098627 225.692746 12 h after light 255.45349149999998 214.863947 296.043036 4 h after dark 241.404224 234.823714 247.984734 8 h after dark 178.69205399999998 174.796832 182.587276 12 h after dark 172.681662 172.681662 172.681662