condition	mean	min	max
4 h after light	6.8489466666666665	6.73378	6.95534
8 h after light	6.249746666666667	6.1159	6.35216
12 h after light	6.2839133333333335	6.00926	6.45637
4 h after dark	6.34937	6.00401	6.636710000000001
8 h after dark	6.39293	6.30511	6.4482
12 h after dark	6.32297	6.0835099999999995	6.4661599999999995