condition	mean	min	max
4 h after light	7.237246666666667	7.04715	7.400939999999999
8 h after light	7.09101	6.9735	7.17851
12 h after light	7.04616	6.7969800000000005	7.29898
4 h after dark	7.75999	7.361560000000001	8.06687
8 h after dark	8.088806666666667	7.93728	8.272730000000001
12 h after dark	8.824156666666665	8.75875	8.86243