condition	mean	min	max
4 h after light	8.5	8.5	8.5
8 h after light	21.8	8.0	35.6
12 h after light	26.7	6.0	47.4
4 h after dark	20.75	5.9	35.6
8 h after dark	18.5	2.1	34.9
12 h after dark	38.5	20.2	56.8