Table 3. Open in new tab MIR spectral...

			High	Intermediate	Low
H2 S(7)	5.49		42.97	41.76	40.51
H2 S(6)	6.06		43.07	41.50	40.69
H2 S(5)	6.89			41.40	40.93
[Ar ii]	6.97	15.76		41.21	41.59
H2 S(4)	7.98			41.36	41.69
[Ar iii]	8.97	27.63			40.34
H2 S(3)	10.52		43.14	41.88	41.49
[S iv]	12.31	34.79	43.28	42.39	41.46
H2 S(2)	12.82		43.11	41.05	40.86
[Ne ii]	14.31	21.56	43.52	42.32	41.83
[Ne v] 14	14.31	97.11	43.16	42.14	41.45
[Ne iii]	15.57	40.96	43.59	42.57	41.93
H2 S(1)	17.06		42.69	41.74	41.56
[S iii] 18	18.72	23.33	43.36	42.06	41.73
[Ne v] 24	24.34	97.11		42.37	41.82
[O iv]	25.86	54.93	43.56^c	42.69	42.06
[Fe ii]	26.04	7.87		42.10	41.42

			High	Intermediate	Low
H2 S(7)	5.49		42.97	41.76	40.51
H2 S(6)	6.06		43.07	41.50	40.69
H2 S(5)	6.89			41.40	40.93
[Ar ii]	6.97	15.76		41.21	41.59
H2 S(4)	7.98			41.36	41.69
[Ar iii]	8.97	27.63			40.34
H2 S(3)	10.52		43.14	41.88	41.49
[S iv]	12.31	34.79	43.28	42.39	41.46
H2 S(2)	12.82		43.11	41.05	40.86
[Ne ii]	14.31	21.56	43.52	42.32	41.83
[Ne v] 14	14.31	97.11	43.16	42.14	41.45
[Ne iii]	15.57	40.96	43.59	42.57	41.93
H2 S(1)	17.06		42.69	41.74	41.56
[S iii] 18	18.72	23.33	43.36	42.06	41.73
[Ne v] 24	24.34	97.11		42.37	41.82
[O iv]	25.86	54.93	43.56^c	42.69	42.06
[Fe ii]	26.04	7.87		42.10	41.42

Table 3.

MIR spectral feature luminosity.

			High	Intermediate	Low
	λ^a	IP^b	luminosity	luminosity	luminosity
Feature	(μm)	(eV)	(erg s⁻¹)	(erg s⁻¹)	(erg s⁻¹)
H2 S(7)	5.49		42.97	41.76	40.51
H2 S(6)	6.06		43.07	41.50	40.69
H2 S(5)	6.89			41.40	40.93
[Ar ii]	6.97	15.76		41.21	41.59
H2 S(4)	7.98			41.36	41.69
[Ar iii]	8.97	27.63			40.34
H2 S(3)	10.52		43.14	41.88	41.49
[S iv]	12.31	34.79	43.28	42.39	41.46
H2 S(2)	12.82		43.11	41.05	40.86
[Ne ii]	14.31	21.56	43.52	42.32	41.83
[Ne v] 14	14.31	97.11	43.16	42.14	41.45
[Ne iii]	15.57	40.96	43.59	42.57	41.93
H2 S(1)	17.06		42.69	41.74	41.56
[S iii] 18	18.72	23.33	43.36	42.06	41.73
[Ne v] 24	24.34	97.11		42.37	41.82
[O iv]	25.86	54.93	43.56^c	42.69	42.06
[Fe ii]	26.04	7.87		42.10	41.42

			High	Intermediate	Low
	λ^a	IP^b	luminosity	luminosity	luminosity
Feature	(μm)	(eV)	(erg s⁻¹)	(erg s⁻¹)	(erg s⁻¹)
H2 S(7)	5.49		42.97	41.76	40.51
H2 S(6)	6.06		43.07	41.50	40.69
H2 S(5)	6.89			41.40	40.93
[Ar ii]	6.97	15.76		41.21	41.59
H2 S(4)	7.98			41.36	41.69
[Ar iii]	8.97	27.63			40.34
H2 S(3)	10.52		43.14	41.88	41.49
[S iv]	12.31	34.79	43.28	42.39	41.46
H2 S(2)	12.82		43.11	41.05	40.86
[Ne ii]	14.31	21.56	43.52	42.32	41.83
[Ne v] 14	14.31	97.11	43.16	42.14	41.45
[Ne iii]	15.57	40.96	43.59	42.57	41.93
H2 S(1)	17.06		42.69	41.74	41.56
[S iii] 18	18.72	23.33	43.36	42.06	41.73
[Ne v] 24	24.34	97.11		42.37	41.82
[O iv]	25.86	54.93	43.56^c	42.69	42.06
[Fe ii]	26.04	7.87		42.10	41.42

Note. Line luminosities calculated for model outputs from PAHFIT for each luminosity template. Blank spaces indicate the feature was not detected by PAHFIT.

^aWavelengths are the best-fitting values from PAHFIT.

^bIonization potentials taken from Cox (2000).

^cCalculated from fitting the local continuum around [O iv] because the PAHFIT model was overpredicting the continuum at longer wavelengths. This value is used for Figs 12–14.

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