condition	mean	min	max
4 h after light	7.07007	6.52907	7.4473
8 h after light	6.830286666666667	6.2575400000000005	7.181719999999999
12 h after light	6.854606666666667	6.24981	7.173360000000001
4 h after dark	7.106263333333334	6.96662	7.2888
8 h after dark	7.228413333333333	7.14508	7.35715
12 h after dark	7.4426499999999995	7.1665399999999995	7.7592