condition	mean	min	max
4 h after light	6.02537	5.71234	6.37596
8 h after light	5.165006666666667	4.95105	5.42739
12 h after light	6.072473333333333	5.7628900000000005	6.2649099999999995
4 h after dark	6.046053333333333	5.73109	6.33855
8 h after dark	6.377843333333333	6.16337	6.74069
12 h after dark	6.36538	6.232130000000001	6.48053