This inclinometry run was performed under night-time conditions on 13th June during a spell of extremely poor weather conditions which prevented normal observing.

    Datasets    El   Dirn      HST       mean leg temperatures    Humidity
                              start      start   middle   end        %
   (20090530    89     cw     07:15       6.4     6.8     7.4        30   
    20090530    89    ccw     10:00       7.4     8.2     9.0        25)
    20090613    89     cw     22:45       7.7     7.1     6.7        18
    20090613    89    ccw     02:00       6.7     6.5     6.4        30                   

The new data are recorded from the 3 active inclinometers and one of the two strain gauge channels.

• The differences between the (CW) model derived from this run and the previous run on 30th May are shown below.
  Click for larger image

• The resulting rms scatters in the differences in (F1,F2,F3) for the left hand plot are (0.34", 0.28", 0.42") compared to (0.25", 0.41", 0.43") last time. The low values seen demonstrate the minimal difference between the track profile during daytime and night time conditions.

• The CW-CCW profile is normal, and is used to generate a hybrid track model which was installed on the 15th June at 11:00.

  
  Strain Data
  The strain gauge readings continue to hold steady - see strain gauge data)