The TATF website says that they plant about 400 teak trees per acre, with a 3 meter by 3 meter spacing. That would be about 988 trees per hectare, quite a bit less than I'd expected of 1025 to 1470 trees. Though I don't know, I would expect that the planting pattern is a series of equilateral triangles 3 meters on each side.
Has anyone that's visited the farms measured the spacing (to confirm 3 meters) and noticed the pattern for teak plantings? People need a way to convert the area required for 100 trees to hectares in order to independently estimate the return from an investment at TATF.