condition	mean	min	max
4 h after light	6.3766300000000005	5.79754	6.95572
8 h after light	6.71937	5.88714	7.5516
12 h after light	7.04971	6.39074	7.70868
4 h after dark	10.41855	10.0086	10.8285
8 h after dark	9.96529	9.80118	10.1294
12 h after dark	10.093250000000001	10.0911	10.0954