Inclinometry was done as follows :

    Datasets  El Dirn     HST     mean leg temperatures   Humidity
                          start     start   middle   end       %
  ( 20040430  90  cw      22:19      3.2      2.7    2.4      90)
    20040512  90  cw      22:55      5.7      5.0    4.3      65
    20040515  90  ccw     23:30      5.6      5.0    4.6     100

All data channels of the inclinometry data look OK. The resulting CW model is compared below with the current one - that taken on 30 Apr :

• The differences in (F1,F2,F3) between these two CW models look essentially free of systematics, and are described by the rms scatters of (0.37", 0.14", 0.36") cf (0.40", 0.30", 0.35") previously.
• The new CW model was not used - the delay in implementation is long and further new data will be obtained soon.
• Records of the symmetry and strain gauge data have been updated; all looks fine.

The CW and CCW models (of the 12th and 15th) are compared below:

• The CW-CCW difference looks v. similar to those obtained previously (see the last lot on 22 March, for instance). However, given the 3 day interlude between its component parts, we will also not add this contribution to the CW-CCW template.