Table 1
pyPAHdb derived parameters for the five template spectra (H ii APDR, DF 1, DF 2, and DF 3) and average parameter values of the regions between the key physical zones (H ii-IF, APDR-DF1, DF1-DF2, DF2-DF3, and DF3-BDF3).
| Zone | fneut | fcat | fan | fsm | fmed | flar | γ |  |
|---|---|---|---|---|---|---|---|---|
| H ii | 0.46 | 0.51 | 0.03 | 0.25 | 0.43 | 0.32 | 2.9 | 70 |
| H ii-IF | 0.44 | 0.51 | 0.05 | 0.26 | 0.41 | 0.32 | 2.7 | 70 |
| APDR | 0.29 | 0.60 | 0.11 | 0.30 | 0.39 | 0.31 | 5.5 | 71 |
| APDR-DF1 | 0.25 | 0.63 | 0.12 | 0.36 | 0.33 | 0.31 | 6.7 | 70 |
| DF1 | 0.30 | 0.58 | 0.12 | 0.35 | 0.31 | 0.34 | 5.1 | 69 |
| DF1-DF2 | 0.32 | 0.56 | 0.12 | 0.36 | 0.30 | 0.34 | 4.7 | 67 |
| DF2 | 0.36 | 0.48 | 0.16 | 0.42 | 0.25 | 0.33 | 3.6 | 63 |
| DF2-DF3 | 0.35 | 0.49 | 0.16 | 0.46 | 0.24 | 0.30 | 3.7 | 62 |
| DF3 | 0.36 | 0.47 | 0.17 | 0.47 | 0.20 | 0.33 | 3.5 | 62 |
| BDF3 | 0.36 | 0.52 | 0.12 | 0.41 | 0.26 | 0.33 | 3.9 | 65 |
Notes. From left to right: the fractional contribution of neutral, cation, anion, small, medium, and large PAHs in the fit, the ionisation parameter γ (× 104 K1/2 cm3), and the average NC. Note that the regions between the key physical zones include emission of the template spectra.
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