condition	mean	min	max
4 h after light	6.349233333333333	6.1555	6.73353
8 h after light	6.27289	6.0499	6.589510000000001
12 h after light	6.397846666666666	5.78524	7.18014
4 h after dark	6.14867	6.03183	6.3691699999999996
8 h after dark	6.24514	5.99102	6.6817899999999995
12 h after dark	6.001546666666667	5.94744	6.04117