condition	mean	min	max
4 h after light	18.3	18.3	18.3
8 h after light	76.65	71.9	81.4
12 h after light	52.15	8.5	95.8
4 h after dark	57.95	54.8	61.1
8 h after dark	51.8	48.8	54.8
12 h after dark	32.2	29.5	34.9