condition	mean	min	max
4 h after light	6.835570000000001	6.5841	7.19875
8 h after light	6.745423333333333	6.61459	6.867719999999999
12 h after light	6.799666666666667	6.6523699999999995	6.975230000000001
4 h after dark	6.9355	6.8561	7.00255
8 h after dark	6.705920000000001	6.48989	6.816110000000001
12 h after dark	6.703943333333334	6.46414	7.106910000000001