|
|
|
NBCG
Relative to fixed North America
|
| Segment: |
0 |
No-of-obs-used: |
11
|
|
Vel(mm/a) |
Vel-sig(mm/a) |
RMS(mm) |
StdDevObsUnitWt |
Vel-XYZ(mm/a):
|
| N: |
9.2 |
0.4 |
3.05 |
0.97 |
13.0
|
| E: |
10.6 |
0.5 |
2.85 |
0.85 |
0.1
|
| U: |
-0.9 |
1.0 |
6.33 |
0.63 |
5.4
|
|
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
|
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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