A CW run with the 'fixed' TMU inclinometer was made during the evening during the fog :

    Datasets El Dirn     HST     mean leg temperatures   Humidity
                        start      start   middle   end       %
  ( 20020428 90 cw       20:30      6.8             5.8     100 )
    20020429 90 cw       20:54      3.8      3.7    3.3     100

The temperature data from the fixed TMU inclinometer seem OK again (!?) so data were processed into a track model in the conventional way. The model resulting is compared below with the model from the 28th :

• The measured track profile is essentially unchanged - there is no sign of 'spikes' as seen in the last week or so, and no sign of the 8.8deg ripple - indicating, again, that the wheel realignment was a momentary event.

• The formal differences in (F1,F2,F3) between these data are described by the rms scatters of (0.33", 0.27", 0.38") - respectably normal.

• Updates have been made to the plots of symmetry and strain gauge data. Both show a return to normalcy compared to the past week or so.

• The new model was installed at 04:30 HST 30 Apr 2002.

• Antenna leg temperatures did not decline particularly fast during the night -- dropping to only 3.1degs at ~08:00 -- so no further were taken this night. Another run should be made when the antenna is 'really cool' - like at 1degC or below.