condition mean min max 4 h after light 1731.686111 1598.333333 1892.585 8 h after light 1990.8655553333333 1827.383333 2152.88 12 h after light 1858.391111 1628.223333 2025.266667 1.5 h after dark 3157.9677776666667 2569.076667 4238.863333 5.5 h after dark 2094.182222 1747.923333 2405.713333 9.5 h after dark 1774.751111 1712.13 1859.69