condition mean min max 0 h after light 7.461295 5.72617 9.19642 4 h after light 3.59971 3.49495 3.70447 8 h after light 6.06566 6.02486 6.10646 4 h after dark 10.42167 9.64084 11.2025 8 h after dark 8.220965 7.2217 9.22023 12 h after dark 6.28268 6.17232 6.39304