**Table 5:** Reddening-corrected H $\beta$ luminosity and results from dereddened line ratios of the nuclear spectra.
	IC 5063	NGC 7212	ESO 362-G008	NGC 3281	NGC 5643	NGC 1386
$F_{\rm H\beta}$ (10^-14 erg s^-1 cm^-2)	54 $\pm$ 1	12 $\pm$ 0.5	11.5 $\pm$ 2	36 $\pm$ 1	10 $\pm$ 0.5	99 $\pm$ 7
$L_{\rm H\beta}$ (10³⁹ erg s^-1)	140 $\pm$ 3	169 $\pm$ 5	65 $\pm$ 9	107 $\pm$ 4	4.8 $\pm$ 0.3	14.2 $\pm$ 1
$T_{\rm e, obs}$ (K)	13865 $\pm$ 1800	14635 $\pm$ 1500	-^a	13715 $\pm$ 440	-^b	15650 $\pm$ 1500
E_{B - V} (mag)^c	0.8 $\pm$ 0.01	0.3 $\pm$ 0.01	0.66 $\pm$ 0.05	0.44 $\pm$ 0.01	0.65 $\pm$ 0.02	0.43 $\pm$ 0.02
$n_{\rm e, obs}$ (cm^-3)	635 $\pm$ 30	1420 $\pm$ 50^d	1420 (1710) $\pm$ 70^e	540 $\pm$ 40	860 (1035) $\pm$ 30^e	1545 $\pm$ 50
$U_{\rm log~(n_{\rm e}) = 3, obs}$ (10^-3)	2.15 $\pm$ 0.01	3.27 $\pm$ 0.02	2.76 $\pm$ 0.1	2.3 $\pm$ 0.02	-^b	2.83 $\pm$ 0.01

^a Underlying absorption lines.

^b Not covered by wavelength range.

^c Note that this central value is not necessarily representative for the reddening within the NLR; for more details on reddening see Table 6.

^d [S II] $\lambda$ 6716 Å is slightly truncated by telluric absorption bands.

^e Using $T_{\rm e}$ = 10 000 K and, in brackets, $\langle T_{\rm e}\rangle_{\rm 4 Sy2s}$ $\sim$ 14 465, respectively.