condition	mean	min	max
4 h after light	8.358653333333333	8.24001	8.41836
8 h after light	8.168406666666668	8.07501	8.265410000000001
12 h after light	7.883109999999999	7.55704	8.140989999999999
4 h after dark	8.34952	8.1832	8.574010000000001
8 h after dark	8.6247	8.433060000000001	8.79907
12 h after dark	8.812843333333333	8.309	9.1539