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Table 4.
Regions of NGC 628 that were used for the spectral analysis.
| Region name | Region description |
|---|---|
| B1 | Large H II region north of centre |
| I1 | Eastern magnetic arm |
| I2 | Southern magnetic arm |
| I3 | South-central magnetic arm |
| I4 | Western magnetic arm |
| R1 | Polarised feature within I1 (north) |
| R2 | Polarised feature within I1 (south) |
| R3 | Polarised feature north of centre |
| S1 | Eastern spiral arm |
| S2 | Western spiral arm |
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