condition mean min max 0 h after light 2.4094550000000003 2.32227 2.49664 4 h after light 2.703995 2.23379 3.1742 8 h after light 4.348395 4.31487 4.38192 4 h after dark 4.069225 3.89399 4.24446 8 h after dark 3.19285 3.15023 3.23547 12 h after dark 2.37073 1.7535 2.98796