condition	mean	min	max
4 h after light	13.51925	12.5827	14.4558
8 h after light	8.3714	7.79003	8.95277
12 h after light	9.45711	9.23052	9.6837
4 h after dark	14.829433333333332	14.5049	15.2807
8 h after dark	12.573833333333333	11.8639	13.1278
12 h after dark	12.9698	11.5142	13.7595