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P721
ITRF2000
![](p721.png)
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Segment: |
0 |
No-of-obs-used: |
1177
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Vel(mm/a) |
Vel-sig(mm/a) |
RMS(mm) |
StdDevObsUnitWt |
Vel-XYZ(mm/a):
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N: |
-9.2 |
0.6 |
2.51 |
0.70 |
-15.6
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E: |
-14.8 |
0.6 |
2.98 |
0.80 |
0.4
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U: |
-2.2 |
0.7 |
9.76 |
0.80 |
-8.1
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Error bars are plus/minus
one standard deviation
Error bars on individual observations
= formal-error x scale-factor.
Currently the scale-factors are:
N:3.0, E:4.0, U:3.0
Red points are positions determined using final orbits
Blue points are positions determined using preliminary orbits
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Vel-stddev = sqrt(WN**2+RW**2)
where WN is a white noise contribution
from propagating the error bars
on the observations
and RW is a random walk contribution
(= a*sqrt(timespan)/timespan
where a is 0.001 m/yr**1/2)
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