George,
Sorry for the lack of information. The results were obtained with 4 Adapt Triangles and 6 Adapt Rectangles. They were placed as suggested in our "Recommended Placement" diagram on our website. The two rear vertical corners were not treated due to a bookcase on one side, and a door in the other.
The measurements were taken on pink noise with an RTA and downloaded into Excel which was used to make the chart.
Please let me know if you'd like any more information.
Nathan Loyer
Eighth Nerve