condition	mean	min	max
4 h after light	4.02695	4.018669999999999	4.03725
8 h after light	4.061556666666666	3.94256	4.21071
12 h after light	4.032906666666666	3.98255	4.09408
4 h after dark	4.01921	3.90573	4.18266
8 h after dark	3.9982966666666666	3.9487099999999997	4.06046
12 h after dark	4.079583333333334	3.99701	4.17945