condition	mean	min	max
4 h after light	7.8388800000000005	7.7801100000000005	7.89871
8 h after light	7.7902233333333335	7.7293	7.86745
12 h after light	7.93582	7.9183699999999995	7.96489
4 h after dark	7.891236666666667	7.49879	8.09127
8 h after dark	7.734873333333334	7.61282	7.92328
12 h after dark	7.67643	7.5140199999999995	7.786789999999999