condition	mean	min	max
0 h after light	6.9791	6.96512	6.99308
4 h after light	6.052675	6.02513	6.08022
8 h after light	6.370705	5.91766	6.82375
4 h after dark	7.34569	6.99582	7.69556
8 h after dark	8.081645	8.0056	8.15769
12 h after dark	6.985465	6.77926	7.19167