condition	mean	min	max
4 h after light	6.05509	5.88462	6.2327
8 h after light	5.9980633333333335	5.90934	6.05615
12 h after light	5.81897	5.64853	5.94682
4 h after dark	5.91389	5.7788900000000005	6.03444
8 h after dark	5.809496666666667	5.38697	6.07659
12 h after dark	5.9540033333333335	5.79919	6.17856