condition	mean	min	max
4 h after light	10.9	10.9	10.9
8 h after light	12.1	3.0	21.2
12 h after light	17.0	15.6	18.4
4 h after dark	23.4	22.4	24.4
8 h after dark	26.35	23.9	28.8
12 h after dark	14.65	12.2	17.1