condition	mean	min	max
4 h after light	9.1	9.1	9.1
8 h after light	31.1	22.5	39.7
12 h after light	32.1	12.1	52.1
4 h after dark	26.2	24.0	28.4
8 h after dark	56.8	53.0	60.6
12 h after dark	12.95	12.0	13.9