condition	mean	min	max
4 h after light	7.85433	7.812869999999999	7.896260000000001
8 h after light	7.88643	7.8461	7.910069999999999
12 h after light	7.906443333333334	7.8075600000000005	7.964460000000001
4 h after dark	7.936483333333333	7.8368	7.98654
8 h after dark	7.778713333333334	7.662260000000001	7.90402
12 h after dark	8.071373333333334	7.9313899999999995	8.29252