condition	mean	min	max
4 h after light	9.350593333333332	9.26671	9.46653
8 h after light	9.407893333333334	9.218160000000001	9.53549
12 h after light	9.54986	9.46692	9.614310000000001
4 h after dark	9.325303333333332	9.30618	9.338239999999999
8 h after dark	9.04454	8.8659	9.20165
12 h after dark	9.132773333333335	9.085180000000001	9.22385