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Table 4.
Mean values (with uncertainties) of the astrometric and image-fitting quality parameters for blue and red CSPNe samples.
| Parameter | Blue stars | Red stars | p value | D value |
|---|---|---|---|---|
| Astrometric excess noise | 0.287 (0.060) | 0.393 (0.076) | 0 | 0.358 |
| IPD harmonic amplitude | 0.043 (0.015) | 0.043 (0.013) | 0 | 0.217 |
| RA error | 0.047 (0.013) | 0.053 (0.017) | 0.001 | 0.177 |
| Dec error | 0.044 (0.010) | 0.049 (0.015) | 0.001 | 0.189 |
| RUWE | 1.013 (0.051) | 1.059 (0.042) | 0.080 | 0.117 |
Notes. p-values and D-values from a Kolmogorov–Smirnov statistical test between both samples and over those parameters, are provided.
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