condition	mean	min	max
4 h after light	6.3227166666666665	6.07699	6.58478
8 h after light	6.44996	6.09658	7.153389999999999
12 h after light	6.38366	6.25104	6.534730000000001
4 h after dark	6.122463333333334	5.881130000000001	6.32613
8 h after dark	6.218446666666667	6.16835	6.2636
12 h after dark	5.908776666666667	5.62122	6.062130000000001