condition	mean	min	max
4 h after light	6.6985133333333335	6.32	7.00564
8 h after light	6.52475	6.0583800000000005	7.08908
12 h after light	6.3147166666666665	5.608230000000001	6.94831
4 h after dark	6.190096666666666	6.08964	6.30565
8 h after dark	5.98406	5.69458	6.2825
12 h after dark	6.09764	5.9002	6.3663