condition	mean	min	max
4 h after light	6.470505	5.66073	7.28028
8 h after light	7.423135	7.21201	7.63426
12 h after light	9.76934	9.65601	9.88267
4 h after dark	11.91925	11.2454	12.5931
8 h after dark	11.754950000000001	11.5248	11.9851
12 h after dark	9.260385	8.36657	10.1542