...
I also note that the vertical velocities are quite small and don't vary, indicating both that the set-up crew did a great job of leveling the towers and that a turbine wake is not visible (expected since the winds were generally from the wrong direction).
Maybe HOWEVER, the Gill at 12 is bad? . When I rserial to it, I get binary gibberish. A wrong baud rate or something I have now checked (using minicom) that this isn't a baud rate issue. Perhaps a 422 issue?