condition	mean	min	max
4 h after light	7.518223333333333	7.3409	7.62908
8 h after light	7.54965	7.45193	7.62602
12 h after light	7.652293333333334	7.53717	7.790960000000001
4 h after dark	7.46535	7.3252	7.64451
8 h after dark	7.369109999999999	7.2128	7.5152399999999995
12 h after dark	7.22851	7.1009	7.400939999999999