condition	mean	min	max
4 h after light	7.641566666666667	7.46707	7.76657
8 h after light	7.2711	6.879739999999999	7.497719999999999
12 h after light	7.03935	6.71512	7.226310000000001
4 h after dark	7.422266666666666	6.95356	7.73037
8 h after dark	7.38881	7.225239999999999	7.62138
12 h after dark	7.58526	7.3772199999999994	7.69291