condition	mean	min	max
4 h after light	8.30729	8.29653	8.32214
8 h after light	8.311266666666667	8.27507	8.380289999999999
12 h after light	8.17385	8.1257	8.22993
4 h after dark	8.15864	8.09943	8.20663
8 h after dark	8.235000000000001	8.17709	8.267330000000001
12 h after dark	8.418983333333333	8.36208	8.5249