condition	mean	min	max
4 h after light	6.66397	6.44665	7.001519999999999
8 h after light	6.73249	6.43623	7.2165
12 h after light	6.77382	6.32594	7.19602
4 h after dark	6.3948833333333335	5.90597	6.91126
8 h after dark	6.282233333333333	6.06554	6.592219999999999
12 h after dark	6.240783333333334	6.09764	6.34598