condition	mean	min	max
4 h after light	7.17483	7.042739999999999	7.304889999999999
8 h after light	6.99382	6.76055	7.234360000000001
12 h after light	7.026376666666667	6.67758	7.21789
4 h after dark	7.136723333333333	6.79525	7.32102
8 h after dark	7.160283333333333	6.957319999999999	7.408189999999999
12 h after dark	8.090196666666667	7.834160000000001	8.444560000000001