condition mean min max 4 h after light 7.1995000000000005 6.89991 7.49909 8 h after light 6.2812 5.78048 6.78192 12 h after light 5.351990000000001 4.68247 6.02151 4 h after dark 8.11435 7.40599 8.92466 8 h after dark 6.30972 6.05043 6.7029 12 h after dark 8.07687 7.17197 9.85496