Table 1.
Estimates of the mean, standard deviation, and rms of the displacements of C7 and the core (marked in bold font).
| Epoch | N |
 |
 |
 |
σs | rmss ± δrmss | σrj |
 |
σc = rmsc ± δrmsc |
|---|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
| 1999.37 − 2016.06 | 109 | 0.013 | 0.0003 | 0.021 | 0.014 | 0.025 ± 0.009 | 0.027 | ≈10−4 | 0.025 ± 0.008 |
| 2010 − 2013 | 28 | 0.0084 | 0.00012 | 0.013 | 0.008 | 0.015 ± 0.005 | 0.021 | ≈10−4 | 0.019 ± 0.007 |
| ≤2010 or ≥2013 | 81 | 0.0152 | 0.0004 | 0.024 | 0.014 | 0.028 ± 0.009 | 0.029 | ≈10−4 | 0.026 ± 0.010 |
| Cadence | N |
 |
 |
 |
σs | rmss ± δrmss | σrj |
 |
σc = rmsc ± δrmsc |
| (days) | |||||||||
| < 35 | 55 | 0.011 | 0.0002 | 0.015 | 0.011 | 0.019 ± 0.007 | 0.025 | ≈ − 10−3 | 0.024 ± 0.007 |
| > 35 | 54 | 0.017 | 0.0005 | 0.027 | 0.013 | 0.030 ± 0.009 | 0.029 | ≈10−3 | 0.026 ± 0.013 |
Notes. The unit of measurements is given in mas. Columns are as follows: (1) range of epochs and cadences, (2) number of displacements, (3) 
is the mean of apparent displacements of C7 projected normal to the jet axis, (4) 
is the mean of rn squared, (5) 
is the mean of displacements of C7 (Eq. (9)), (6) σs is the standard deviation of the displacements (Eq. (10)), (7) rmss of the displacements of C7 (Eq. (17)) and its standard error (Eq. (A.3)), (8) σrj is the standard deviation of projections of the apparent displacements of C7 on the jet axis, (9) 
is the mean displacement of the core (Eq. (15)), (10) rmsc or σc of the displacements of the core (Eq. (18)) and their standard error (Eq. (A.9)).
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