condition	mean	min	max
4 h after light	8.098575	6.87984	9.31731
8 h after light	7.940075	7.60781	8.27234
12 h after light	10.157705	8.90801	11.4074
4 h after dark	14.9784	14.438	15.5188
8 h after dark	13.60005	13.4998	13.7003
12 h after dark	12.08575	11.5564	12.6151