condition	mean	min	max
4 h after light	4.0	4.0	4.0
8 h after light	2.7	2.6	2.8
12 h after light	22.0	15.4	28.6
4 h after dark	18.35	1.6	35.1
8 h after dark	25.75	22.5	29.0
12 h after dark	27.75	24.3	31.2