condition	mean	min	max
4 h after light	7.2182	7.05703	7.3132
8 h after light	7.44795	7.33605	7.596369999999999
12 h after light	7.26467	7.15215	7.3431
4 h after dark	7.153676666666667	7.127619999999999	7.18145
8 h after dark	7.107226666666667	7.029039999999999	7.195180000000001
12 h after dark	6.778106666666666	6.66407	6.94008