condition	mean	min	max
4 h after light	12.5	12.5	12.5
8 h after light	11.55	9.3	13.8
12 h after light	26.9	12.0	41.8
4 h after dark	12.65	2.3	23.0
8 h after dark	18.8	8.9	28.7
12 h after dark	22.45	15.2	29.7