condition	mean	min	max
4 h after light	6.8827799999999995	6.60111	7.204789999999999
8 h after light	6.607476666666667	6.50261	6.741560000000001
12 h after light	6.52698	6.144430000000001	6.90355
4 h after dark	6.037653333333333	5.6051400000000005	6.44802
8 h after dark	6.30872	6.12211	6.57486
12 h after dark	6.788119999999999	6.57227	6.9131