condition mean min max 4 h after light 3.598199666666667 3.247018 4.2284180000000005 8 h after light 4.0880996666666665 2.058271 7.487547999999999 12 h after light 2.504715 1.710914 3.475532 16 h after light 6.4737290000000005 3.7396830000000003 8.939647 4 h after dark 5.545961666666667 3.045776 7.1475729999999995 8 h after dark 8.345496333333333 5.498431 11.40754