We do as usually look first at the heatmap that catches the main structure of the data. CC is ChunkCounts and is the total number of shared segments including identical and related segments. CL is ChunkLenght and is the total shared (both identical and related) segments in cM (centimorgans).
External influenced varuation
Dimension 3 on the other hand reflect an external variation from "Others" that peaks among Finns and to large extent Saami and the least among Scandinavians suggesting a Eastern European continental origin for this influence. As we can see also this dimension appear to be effective to differentiate Finns and Saamis from Scandinavians but it doesnt appear so clear cut as dimension 1 and 2 above.
Internal influenced variation
As dimension 1 horizontal axis appears to differentiate so well the Scandinavians and Finns at each extreme we will continue to use this dimension. All the dimensions above 3 appear to show internal variation. The dimension 4 vertical axis appears to show the Scandinavian-Finn and Saami at each extreme.
DImension D1-D6 appears diffcult to explain. It appears to be Finnish variation as its more dispersed among Finns than others.
I will need some more research about this dimension. It doesnt seem to reflect the structure of Finnish subgroups in the heatmaps.