condition mean min max 4 h after light 1737.0 1737.0 1737.0 8 h after light 1807.55 1691.8 1923.3 12 h after light 1710.2 1646.9 1773.5 4 h after dark 1899.95 1866.0 1933.9 8 h after dark 2108.9 1961.2 2256.6 12 h after dark 2022.1000000000001 1953.9 2090.3