condition	mean	min	max
4 h after light	7.548902999999999	7.4403	7.657506
8 h after light	7.9288605	7.671887	8.185834
12 h after light	7.5935505	7.515214	7.671887
4 h after dark	8.255312499999999	8.138174	8.372451
8 h after dark	7.5916885	7.52015	7.663227
12 h after dark	8.430413	8.430413	8.430413