condition	mean	min	max
4 h after light	13.48985	11.6587	15.321
8 h after light	10.23556	9.05192	11.4192
12 h after light	12.0181	11.9511	12.0851
4 h after dark	21.3656	20.4028	22.3284
8 h after dark	19.95785	19.652	20.2637
12 h after dark	27.52295	25.5228	29.5231