condition	mean	min	max
4 h after light	21.1	21.1	21.1
8 h after light	13.85	2.8	24.9
12 h after light	18.15	3.5	32.8
4 h after dark	54.8	16.1	93.5
8 h after dark	23.45	4.5	42.4
12 h after dark	29.8	16.5	43.1