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Table 2
PA estimated for various radial extends using different Vt,di/ dt values.
| ρ(°) | Mean PA (°) | Mean PA (°) | Mean PA (°) | Mean PA (°) | PA |
| Vt = 474.1 km s-1 | Vt = 474.1 km s-1 | Vt = 474.1 km s-1 | Vt = 454 km s-1 | ||
|
(di/ dt = −103°/ Gyr) | (di/ dt = −184°/ Gyr) | (di/ dt = −184°/ Gyr) | ||
|
|
|||||
| 0.0–5.1 | 140 | 131 | 125 | 130 | 45 |
| 0.5–5.1 | 132 | 121 | 115 | 120 | 28 |
| 0.5–4.0 | 143 | 133 | 126 | 131 | 23 |
Notes. The last column is the estimated standard deviation in PA.
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