John and Khoung just swapped 7m and 8m sonics. Now 8m speeds are higher. 7m speeds are perhaps a bit low. Now S/N720 is at 8m and 369 is at 7m. (I just interrupted the data stream to determine this.)
I guess this means that 720 has been reading high all this time (and still is)?
6-4-09 (twh) swap occurred from 14:45 - 15:25