condition	mean	min	max
4 h after light	6.87961	6.42137	7.42328
8 h after light	6.3378033333333335	5.86538	6.913189999999999
12 h after light	6.956306666666666	6.69957	7.29767
4 h after dark	6.64003	6.281280000000001	6.93359
8 h after dark	6.62796	6.43565	6.749569999999999
12 h after dark	6.127813333333333	6.0446599999999995	6.28747