condition	mean	min	max
4 h after light	23.8	23.8	23.8
8 h after light	33.3	31.4	35.2
12 h after light	48.7	46.3	51.1
4 h after dark	39.15	38.9	39.4
8 h after dark	33.9	29.4	38.4
12 h after dark	24.4	12.8	36.0