condition	mean	min	max
4 h after light	5.304056666666667	5.203790000000001	5.40974
8 h after light	5.42534	5.26649	5.66442
12 h after light	5.26058	5.00937	5.4675400000000005
4 h after dark	5.2663866666666665	5.23184	5.29005
8 h after dark	5.22618	5.13886	5.32894
12 h after dark	5.278426666666666	5.09394	5.55786