Because the Woods outline goes through the dot, I'm calling it Woods (with a large side-yard for viewing purposes).So L15 seems to me to be predominately Open Ground. Does a unit in the hex receive the Woods TEM?
I seed what you did there.And I'm going to go out on a limb
Yes That!Why is this even a discussion? It's not some trivial over-extension of woods artwork from the edges of the hex. That is a solid blob of woods within the hex. The centre dot is not relevant. It's a woods hex because the woods "dominates the hex" as per B.1 "... most hexes are dominated by one specific terrain type and are governed by the rules for that specific terrain type. Usually, the dominant terrain type includes the hex center dot, but occasionally building hexes have a hex center dot in Open Ground; an Open Ground hex center dot never changes a hex containing a building to an Open Ground hex."
What is true for buildings is also true for woods and other terrain types. There are several hexes of this type. (There were even more before the older boards had their artwork redone.)

Not according to B1.1 "Open Ground is any hex devoid of other printed terrain features which would affect fire or LOS into that hex."Is Open Ground a Terrain Type? Hex L15 is 70% Open Ground approx.