condition	mean	min	max
4 h after light	16.043225	15.232169	16.854281
8 h after light	18.5984605	16.374492	20.822429
12 h after light	13.269434	11.805043	14.733825
4 h after dark	15.550645	15.176055	15.925235
8 h after dark	16.065658	12.164764	19.966552
12 h after dark	16.207948	16.207948	16.207948