condition	mean	min	max
4 h after light	6.17543	5.99929	6.27235
8 h after light	5.97205	5.84336	6.162640000000001
12 h after light	6.15358	6.1180699999999995	6.22319
4 h after dark	6.043683333333333	5.88607	6.1321699999999995
8 h after dark	6.3085700000000005	6.1794	6.38891
12 h after dark	6.2863500000000005	6.1866900000000005	6.45098