condition	mean	min	max
4 h after light	7.58808	7.36105	7.81511
8 h after light	7.00398	6.3885	7.61946
12 h after light	6.555899999999999	5.90961	7.20219
4 h after dark	8.036964999999999	8.02352	8.05041
8 h after dark	8.514724999999999	8.21013	8.81932
12 h after dark	8.268045	8.22221	8.31388