condition	mean	min	max
4 h after light	5.8712	5.71823	6.02417
8 h after light	7.757785	7.73687	7.7787
12 h after light	4.785635	4.26231	5.30896
4 h after dark	6.973155	6.07003	7.87628
8 h after dark	7.5707699999999996	7.33929	7.80225
12 h after dark	6.6342300000000005	5.9643	7.30416