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BLCK
Network Processing

Observed data

Summary Info

Data

Plot (.ps)

Plot (.gmt)

QOCA (1) data

BLCK
Relative to fixed North America


Segment: 0 No-of-obs-used: 5
Vel(mm/a) Vel-sig(mm/a) RMS(mm) StdDevObsUnitWt Vel-XYZ(mm/a):
N: 6.5 1.2 3.72 0.89 5.4
E: -0.7 1.2 4.52 1.01 10.0
U: -9.5 3.7 9.60 0.70 -2.0
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)