condition	mean	min	max
4 h after light	7.729080000000001	7.70603	7.74115
8 h after light	7.690536666666667	7.6562600000000005	7.7339199999999995
12 h after light	7.735053333333333	7.666910000000001	7.77605
4 h after dark	7.71893	7.6435	7.8234699999999995
8 h after dark	7.839986666666667	7.70586	8.03617
12 h after dark	7.902173333333334	7.77654	7.97548