condition	mean	min	max
4 h after light	18.4	18.4	18.4
8 h after light	42.7	23.7	61.7
12 h after light	23.95	23.0	24.9
4 h after dark	37.8	31.5	44.1
8 h after dark	51.95	44.5	59.4
12 h after dark	48.75	33.9	63.6