Clearly we can't know for sure unless we have more information about the data itself.
But my reasoning is this: If we assume a uniform number of "samples per area" then the north/south distinction does matter. Larger total sea area in the south would mean more samples taken in the south. And therefore more influence of "southern samples" on the total average.
Again, we don't know unless we have more info, but it seems like a reasonable assumption to make.
But my reasoning is this: If we assume a uniform number of "samples per area" then the north/south distinction does matter. Larger total sea area in the south would mean more samples taken in the south. And therefore more influence of "southern samples" on the total average.
Again, we don't know unless we have more info, but it seems like a reasonable assumption to make.