Table 8: Electron density indicators in NGC 6153.
Ion Ioniz. Lines Observed $N_{{\rm e}}$

pot. (eV) used ratio (cm^-3)

[S II] 10.4 6731/6716 1.66 4100

13.6 3626/3729 1.92 3500

23.3 33.5/18.7 0.28 4500

23.8 5538/5518 1.27 4500

35.1 52/88 3.61 2000

40.7 4711/4740 1.08 2800

41.0 15.5/36.0 12.3 3400

**Table 8:** Electron density indicators in NGC 6153.
Ion	Ioniz.	Lines	Observed	$N_{{\rm e}}$
	pot. (eV)	used	ratio	(cm^-3)
[S II]	10.4	6731/6716	1.66	4100
	13.6	3626/3729	1.92	3500
	23.3	33.5/18.7	0.28	4500
	23.8	5538/5518	1.27	4500
	35.1	52/88	3.61	2000
	40.7	4711/4740	1.08	2800
	41.0	15.5/36.0	12.3	3400

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