condition	mean	min	max
4 h after light	7.267893333333333	7.1976	7.36635
8 h after light	7.378223333333334	7.2461	7.475910000000001
12 h after light	7.336906666666667	7.307239999999999	7.395630000000001
4 h after dark	7.55548	7.50062	7.61114
8 h after dark	7.322220000000001	7.253360000000001	7.37293
12 h after dark	7.315076666666666	7.20985	7.425739999999999