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20020814 report
CW Inclinometry again 'normal', CCW work done too.
Inclinometry was done as follows :
Datasets El Dirn HST mean leg temperatures Humidity
start start middle end %
( 20020801 90 cw 17:00 9.1 9.9 10.0 40
20020812 90 cw 06:50 6.1 6.5 7.1 40 )
20020814 90 cw 03:40 8.0 7.9 7.8 85
20020814 90 ccw 06:30 7.8 7.7 7.9 75
The temperature data from the fixed TMU inclinometer are once again OK -
so the new data were processed into track models using the usual
temperature correction algorithms.
The resulting models are compared with each other and with previous
models below :
| 020814cw-020801 |
020814cw-020812 |
020814cw-020814_ccw |
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The 'spikes' seen in the data of
12 Aug
have disappeared, and the new CW data are comparable with those of
01 Aug :
-
The formal differences in
(F1,F2,F3)
are described by the rms scatters of
(0.62", 0.33", 0.39")
c.f.
(1.08", 0.40", 0.33")
previously.
-
The CW-CCW difference compares favourably with
previous measures.
-
Updates have been made to the plots of
symmetry
and
strain gauge data.
The CW data show a return towards normal values, although it is
interesting to note that the CCW strain values are lower than their
CW counterparts, as was seen (though not reported) in the last CW/CCW pair
taken
09 May.
- The prevailing temperature for the new data is higher than
the normal operating temperature, but still lower than that
for the data of 01 Aug, so the new CW model is preferred.
The new model was installed at 10:00 HST 15 Aug 2002.
Iain Coulson
Latest Update : 15 Aug 2002
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