condition	mean	min	max
4 h after light	8.662953333333332	8.587	8.774289999999999
8 h after light	8.62614	8.53947	8.72834
12 h after light	8.324736666666666	8.250010000000001	8.38749
4 h after dark	8.340399999999999	8.30912	8.393889999999999
8 h after dark	8.40433	8.30475	8.516589999999999
12 h after dark	8.590443333333333	8.30986	8.85966