250m south boom
For some reason the south boom at 250m is shorter than all the rest. Neither Bruce nor I can remember why this is or when it happened. 250m except for LUMEX and XPIA has not been instrumented.

Measurement from the center of the sonic path to the south leg is 3.15m

Sonics and T/RH at 300, 250, 200, and 150m have all been removed.