condition	mean	min	max
4 h after light	7.646953333333333	7.592960000000001	7.730230000000001
8 h after light	7.81054	7.712269999999999	7.94525
12 h after light	7.998166666666666	7.87592	8.14748
4 h after dark	8.15619	8.1362	8.18256
8 h after dark	8.158256666666666	8.05246	8.25119
12 h after dark	8.228393333333333	8.21119	8.25586