condition	mean	min	max
4 h after light	9.054895	8.59756	9.51223
8 h after light	6.347135	5.19407	7.5002
12 h after light	7.464905	7.3564	7.57341
4 h after dark	15.5593	14.9781	16.2442
8 h after dark	15.635833333333332	15.1539	16.5887
12 h after dark	15.971499999999999	15.3704	17.1102