Inclinometry has been done as follows :

    Datasets  El Dirn     HST     mean leg temperatures   Humidity
                          start     start   middle   end       %
  ( 20031004  90  cw      10:30      5.0      6.1    7.0      25 )
    20031012  90  cw      23:53      3.5      3.5    3.4     100

All channels of the new data were OK. The resulting model is compared with previous one taken on 04 Oct below :

• A small but distinct change in the behaviour of the F1 term is evident - possibly as a result of the lower temperatures ? The differences in (F1,F2,F3) between these two CW models are described by the rms scatters of (0.24", 0.13", 0.37") c.f. (0.36", 0.14", 0.41") previously.

• The new (CW) model was merged with the recent (CW-CCW) average to create a new hybrid track model, which was installed at HST 10:30 on 13 Oct 2003.

• The data have been used to update the plots of symmetry and strain gauge data. All seems OK.