condition	mean	min	max
4 h after light	7.466543333333333	7.2944	7.5601199999999995
8 h after light	7.69149	7.44342	7.89025
12 h after light	7.88511	7.8087800000000005	7.9652199999999995
4 h after dark	8.434513333333333	8.255289999999999	8.65594
8 h after dark	8.095313333333333	7.932169999999999	8.275319999999999
12 h after dark	8.047979999999999	7.93162	8.16067