condition	mean	min	max
4 h after light	6.70061	6.24401	7.0055
8 h after light	6.495769999999999	6.1098	7.07569
12 h after light	7.24552	6.716760000000001	7.60035
4 h after dark	6.982986666666666	6.63333	7.47558
8 h after dark	6.874296666666667	6.730580000000001	6.955439999999999
12 h after dark	6.75062	6.4442699999999995	7.054889999999999