condition	mean	min	max
4 h after light	6.690973333333333	6.41686	6.96643
8 h after light	6.280056666666667	5.86562	6.71022
12 h after light	6.13565	5.70144	6.53691
4 h after dark	5.75869	5.43515	6.14901
8 h after dark	5.52011	5.253080000000001	5.73011
12 h after dark	5.44167	5.36421	5.56188