condition	mean	min	max
4 h after light	7.375486666666666	4.75458	10.8415
8 h after light	6.53733	3.99073	10.5104
12 h after light	9.52484	5.22603	17.3021
4 h after dark	19.0414	16.8409	20.2699
8 h after dark	9.580166666666667	6.50448	14.1118
12 h after dark	7.50084	5.66028	8.53771