condition	mean	min	max
4 h after light	8.247133000000002	8.001169	8.493097
8 h after light	8.9041605	8.860058	8.948263
12 h after light	8.142276500000001	8.034376	8.250177
4 h after dark	8.215294	7.658603	8.771985
8 h after dark	7.5993575	7.526828	7.671887
12 h after dark	7.962588	7.962588	7.962588