condition	mean	min	max
4 h after light	7.899673333333334	7.873530000000001	7.9180600000000005
8 h after light	7.805359999999999	7.78839	7.82057
12 h after light	7.850043333333333	7.64452	7.99379
4 h after dark	7.918316666666667	7.792739999999999	8.02185
8 h after dark	8.07831	7.956980000000001	8.16961
12 h after dark	7.790546666666667	7.47963	8.07281