condition	mean	min	max
4 h after light	3.0	3.0	3.0
8 h after light	56.75	41.8	71.7
12 h after light	43.5	38.5	48.5
4 h after dark	43.85	34.7	53.0
8 h after dark	49.2	45.5	52.9
12 h after dark	28.65	24.0	33.3