condition	mean	min	max
4 h after light	6.672829999999999	6.13375	7.21191
8 h after light	8.40149	7.31745	9.48553
12 h after light	8.874185	8.85123	8.89714
4 h after dark	13.9585	12.9609	14.9561
8 h after dark	11.0535	11.0248	11.0822
12 h after dark	11.144950000000001	10.7001	11.5898