condition	mean	min	max
4 h after light	7.6256200000000005	7.552560000000001	7.72358
8 h after light	7.545723333333333	7.3357	7.74715
12 h after light	7.6697	7.60423	7.7336
4 h after dark	7.595306666666667	7.4451600000000004	7.829619999999999
8 h after dark	7.59936	7.444	7.721710000000001
12 h after dark	7.411296666666667	7.26019	7.56142