condition	mean	min	max
4 h after light	5.968416666666666	5.93698	5.99681
8 h after light	6.01455	5.9242	6.1081900000000005
12 h after light	5.99538	5.7704	6.159590000000001
4 h after dark	5.8862733333333335	5.7348	6.01503
8 h after dark	5.96797	5.79889	6.11741
12 h after dark	5.959046666666667	5.86931	6.04755