condition	mean	min	max
4 h after light	6.91545	6.732539999999999	7.0393
8 h after light	7.042833333333333	6.77561	7.21052
12 h after light	7.21711	6.9593	7.413460000000001
4 h after dark	7.117706666666667	6.923610000000001	7.223669999999999
8 h after dark	7.01521	6.736619999999999	7.280130000000001
12 h after dark	6.961483333333334	6.74085	7.11667