condition	mean	min	max
4 h after light	6.6631366666666665	6.64095	6.69632
8 h after light	6.8006633333333335	6.683039999999999	6.861910000000001
12 h after light	7.12591	7.036410000000001	7.247380000000001
4 h after dark	6.967746666666667	6.9185300000000005	7.02521
8 h after dark	7.00284	6.77221	7.20742
12 h after dark	6.95575	6.70282	7.1868