condition	mean	min	max
4 h after light	4.8	4.8	4.8
8 h after light	9.45	4.8	14.1
12 h after light	14.45	11.5	17.4
4 h after dark	16.2	3.6	28.8
8 h after dark	25.05	19.5	30.6
12 h after dark	17.65	3.8	31.5