condition	mean	min	max
4 h after light	6.0538533333333335	5.941330000000001	6.25052
8 h after light	5.996693333333333	5.79559	6.2341
12 h after light	6.17434	5.96943	6.39561
4 h after dark	6.731746666666666	6.44275	7.067069999999999
8 h after dark	6.335706666666667	6.2317	6.49498
12 h after dark	6.19064	6.02528	6.325419999999999