condition	mean	min	max
4 h after light	7.724863333333333	7.173080000000001	8.06017
8 h after light	6.7275833333333335	6.162999999999999	7.23782
12 h after light	6.910456666666666	6.46981	7.186139999999999
4 h after dark	6.894816666666666	6.5388	7.2100100000000005
8 h after dark	7.25987	7.13048	7.50824
12 h after dark	6.99182	6.75931	7.305510000000001