condition	mean	min	max
4 h after light	4.354246666666667	4.3049800000000005	4.4176400000000005
8 h after light	4.43372	4.30002	4.58845
12 h after light	4.52016	4.49731	4.56117
4 h after dark	4.246876666666667	4.13855	4.33481
8 h after dark	4.254713333333333	4.09326	4.351369999999999
12 h after dark	4.28855	4.19688	4.36246