condition	mean	min	max
4 h after light	7.797956666666667	7.69957	7.956230000000001
8 h after light	7.997906666666666	7.77963	8.150839999999999
12 h after light	8.116043333333334	7.9611600000000005	8.28919
4 h after dark	7.86128	7.681310000000001	7.95538
8 h after dark	7.6694700000000005	7.637569999999999	7.7077100000000005
12 h after dark	7.780053333333333	7.742489999999999	7.80134