condition	mean	min	max
4 h after light	9.3	9.3	9.3
8 h after light	20.5	18.3	22.7
12 h after light	20.75	18.8	22.7
4 h after dark	16.95	10.2	23.7
8 h after dark	27.35	25.0	29.7
12 h after dark	43.5	21.9	65.1