condition	mean	min	max
4 h after light	15.79805	13.6272	17.9689
8 h after light	9.336305	9.00875	9.66386
12 h after light	9.234935	8.6287	9.84117
4 h after dark	10.713636666666666	9.04611	11.6724
8 h after dark	16.497799999999998	12.4031	19.3906
12 h after dark	17.142833333333336	16.8917	17.3179