condition	mean	min	max
4 h after light	7.7655899999999995	7.68245	7.8207699999999996
8 h after light	7.827263333333334	7.625380000000001	7.93272
12 h after light	7.794136666666667	7.6136800000000004	8.007710000000001
4 h after dark	7.8014	7.7030899999999995	7.95507
8 h after dark	7.849603333333333	7.58645	8.04107
12 h after dark	7.955526666666666	7.76147	8.069519999999999