condition mean min max 0 h after light 11.92085 10.7336 13.1081 4 h after light 8.585845 7.39529 9.7764 8 h after light 16.1524 15.9209 16.3839 4 h after dark 22.481650000000002 21.7715 23.1918 8 h after dark 13.9001 13.6046 14.1956 12 h after dark 12.61525 12.1484 13.0821