Open Access
Table 1.
Parameter optimization for TP data reduction.
| Window width | Polynomial | rms | Line | ||
|---|---|---|---|---|---|
| MHz | channels | km s−1 | degree | ratio (a) | ratio (b) |
| 53.53 | 1096 | 139 | 40 | 0.871 | 0.998 |
| – | – | – | 60 | 1.240 | 0.979 |
| – | – | – | 65 | 1.275 | 1.012 |
| – | – | – | 70 | 1.288 | 1.020 |
| – | – | – | 75 | 1.341 | 0.998 |
| – | – | – | 100 | 1.419 | 1.020 |
| 49.53 | 1014 | 129 | 55 | 1.242 | 0.980 |
| – | – | – | 60 | 1.274 | 1.018 |
| – | – | – | 65 | 1.294 | 1.008 |
| – | – | – | 70 | 1.341 | 0.988 |
| – | – | – | 90 | 1.409 | 0.995 |
| – | – | – | 95 | 1.411 | 0.983 |
| 45.53 | 932 | 118 | 35 | 0.929 | 0.983 |
| – | – | – | 55 | 1.252 | 1.010 |
| – | – | – | 60 | 1.267 | 1.017 |
| – | – | – | 65 | 1.329 | 1.000 |
| – | – | – | 80 | 1.389 | 0.994 |
| – | – | – | 95 | 1.424 | 0.988 |
| 41.53 | 851 | 108 | 30 | 0.829 | 1.020 |
| – | – | – | 50 | 1.251 | 1.017 |
| – | – | – | 55 | 1.277 | 1.006 |
| – | – | – | 85 | 1.408 | 1.004 |
| 37.53 | 769 | 98 | 45 | 1.236 | 1.006 |
| – | – | – | 50 | 1.256 | 1.016 |
| – | – | – | 55 | 1.332 | 0.992 |
| – | – | – | 75 | 1.410 | 1.016 |
| 33.53 | 687 | 87 | 25 | 0.823 | 1.021 |
| – | – | – | 45 | 1.259 | 1.013 |
| – | – | – | 60 | 1.379 | 1.000 |
| 29.53 | 605 | 77 | 35 | 1.218 | 1.010 |
| – | – | – | 40 | 1.259 | 1.013 |
| – | – | – | 60 | 1.409 | 1.013 |
| 25.53 | 523 | 66 | 35 | 1.316 | 0.996 |
| – | – | – | 45 | 1.412 | 1.019 |
| – | – | – | 50 | 1.433 | 1.020 |
| – | – | – | 60 | 1.492 | 0.985 |
| 21.53 | 441 | 56 | 25 | 1.177 | 1.007 |
| – | – | – | 30 | 1.276 | 0.981 |
| – | – | – | 40 | 1.369 | 0.984 |
| – | – | – | 50 | 1.424 | 1.011 |
| – | – | – | 65 | 1.513 | 0.987 |
| 13.53 | 277 | 35 | 15 | 1.209 | 0.992 |
| – | – | – | 25 | 1.421 | 1.012 |
| – | – | – | 30 | 1.473 | 1.009 |
| – | – | – | 45 | 1.597 | 1.023 |
| – | – | – | 50 | 1.619 | 1.008 |
| 9.53 | 195 | 25 | 10 | 1.287 | 0.994 |
| – | – | – | 20 | 1.536 | 1.011 |
| 5.53 | 113 | 14 | 5 | 1.459 | 0.987 |
| – | – | – | 10 | 1.667 | 0.993 |
| – | – | – | 15 | 1.784 | 0.977 |
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