condition	mean	min	max
4 h after light	4.18992	4.156569999999999	4.2476400000000005
8 h after light	4.20277	4.07939	4.27185
12 h after light	4.069393333333333	4.00787	4.103190000000001
4 h after dark	4.263396666666667	4.23093	4.2862
8 h after dark	4.23313	4.12582	4.3440199999999995
12 h after dark	4.153256666666667	4.09563	4.2599599999999995