Inclinometry was done as follows :

    Datasets  El Dirn     HST     mean leg temperatures   Humidity
                          start     start   middle   end       %
  ( 20050319  90  cw      01:21      3.9      3.9    3.9      44 )
    20050403  90  cw      09:47      4.1      5.2    6.2      17

All inclinometry and temperature data channels look; Ch13 - the #1 strain gauge - is still not functional.

The difference between the CW model resulting from these new data and the previous one of 19 Mar is shown below:

• There are 3 obvious 'spikes' in the new data at azimuths 285.09, 321.89 and 345.89 : they originate essentially from the LY channel in each case, although there is a 1" contribution from RY in the first/largest one. The azimuths of the two smaller events are close to track joints, but that of the largest one is not. The LY contributions have been interpolated out before the model was installed.
• The differences in (F1,F2,F3) are then described by rms scatters of (0.31", 0.15", 0.33") c.f. (0.45", 0.17", 0.34") previously.

• The new CW model was merged with the (CW-CCW) template to create a new hybrid track model, which was installed at HST 09:00 on 04 April 2005.
• The symmetry (defined here) remains elevated, but stable. The wheel loads - as judged from strain gauge No.2 only - are OK.