condition	mean	min	max
4 h after light	8.37646	8.16903	8.58389
8 h after light	6.577395	6.57343	6.58136
12 h after light	9.44819	9.24634	9.65004
4 h after dark	11.94315	11.9389	11.9474
8 h after dark	12.37695	11.238	13.5159
12 h after dark	10.7451	10.4766	11.0136