condition	mean	min	max
4 h after light	9.65343	8.10936	11.1975
8 h after light	13.28805	12.8367	13.7394
12 h after light	16.149	15.2229	17.0751
4 h after dark	20.1618	18.8054	21.9306
8 h after dark	17.5645	16.583	19.0561
12 h after dark	16.633033333333334	15.1769	18.0025