condition	mean	min	max
4 h after light	6.1255766666666664	6.05631	6.20964
8 h after light	6.19375	6.1476	6.28125
12 h after light	6.139376666666666	6.051419999999999	6.2507
4 h after dark	6.14652	6.07923	6.205369999999999
8 h after dark	6.103553333333334	5.965380000000001	6.17989
12 h after dark	6.04992	6.02299	6.06785