condition mean min max 2 h after light 11.43911 7.84756 13.5426 6 h after light 7.665265 5.70969 9.53858 10 h after light 9.225895 6.77769 12.1443 14 h after light 9.625563333333334 6.11429 13.7826 18 h after light 10.012756666666666 8.49277 11.9573 2 h after dark 16.854733333333332 12.1077 19.8