Some time around Tuesday February 19th or Wednesday the 20th the drive motor on the CU windcube failed and compromised the recorded data (exact times to be determined). The unit recorded data sporadically for the next couple of days, but the laser was pointed south for all of those measurements.
The unit will be shipped to NRG for repair and system upgrade.
Update: Looking at the .RTD files indicates that the windcube records different position directions (0 90 180 270 0 90 180 270 ...) regardless of the actual head position.