condition	mean	min	max
4 h after light	4.0	4.0	4.0
8 h after light	18.95	14.1	23.8
12 h after light	17.25	10.6	23.9
4 h after dark	10.0	8.3	11.7
8 h after dark	47.55	23.8	71.3
12 h after dark	10.45	8.4	12.5