condition	mean	min	max
4 h after light	6.76556	6.35673	7.17439
8 h after light	6.034395	5.9557	6.11309
12 h after light	8.821560000000002	8.58069	9.06243
4 h after dark	11.858799999999999	11.4453	12.2723
8 h after dark	10.75045	10.707	10.7939
12 h after dark	9.42109	9.32954	9.51264