condition	mean	min	max
4 h after light	6.56382	6.50904	6.65932
8 h after light	6.510223333333333	6.48452	6.55472
12 h after light	6.45332	6.340990000000001	6.6066199999999995
4 h after dark	6.69289	6.678660000000001	6.7152199999999995
8 h after dark	6.448166666666666	6.3385	6.57327
12 h after dark	6.681886666666667	6.5068	6.8574600000000006