condition	mean	min	max
4 h after light	8.98914	8.94744	9.05358
8 h after light	8.972010000000001	8.932210000000001	9.04107
12 h after light	8.784086666666667	8.74403	8.85238
4 h after dark	8.58992	8.42615	8.71004
8 h after dark	8.542706666666668	8.41639	8.61397
12 h after dark	8.41071	8.25638	8.60131