condition	mean	min	max
4 h after light	7.53183	7.4692300000000005	7.585610000000001
8 h after light	7.384956666666667	7.26583	7.51127
12 h after light	7.324113333333333	7.084289999999999	7.594060000000001
4 h after dark	7.405830000000001	7.107710000000001	7.706360000000001
8 h after dark	7.376836666666667	7.27072	7.4409
12 h after dark	7.347029999999999	7.315169999999999	7.399789999999999