Table 2.
Positional variation of centroids at quiet times.
| Frequency | σX | σY | σr | Bmaj | Bmin |
|---|---|---|---|---|---|
| (MHz) | (pixels) | (pixels) | (pixels) | (arcsec) | (arcsec) |
| 101 | 0.9 | 0.15 | 0.91 | 312 | 246 |
| 165 | 0.59 | 0.63 | 0.86 | 240 | 204 |
| 298 | 0.25 | 0.51 | 0.57 | 210 | 198 |
Notes. The positional variation of centroids at quiet times is shown in Fig. 6 where 1 pixel = 50″. It is important to note the following: 
. The dimensions of half power beam width of point spread function (PSF) are shown. Area of the PSF = πBmajBmin, where Bmaj and Bmin are major and minor axes, respectively.
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