condition	mean	min	max
4 h after light	9.091476666666667	8.92099	9.28351
8 h after light	8.87601	8.7088	8.99125
12 h after light	9.046666666666667	8.89359	9.26302
4 h after dark	8.72071	8.45297	8.88684
8 h after dark	8.469	8.14137	8.86253
12 h after dark	8.040790000000001	7.992660000000001	8.07351