condition mean min max 4 h after light 1.21881 1.12875 1.30887 8 h after light 1.12961 1.03956 1.21966 12 h after light 1.1421999999999999 1.10547 1.17893 4 h after dark 0.955578 0.687725 1.19817 8 h after dark 1.1719873333333333 0.990392 1.32235 12 h after dark 1.5250133333333333 0.90471 2.47324