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Table 5

Electron densities (in cm-3).

Nebula ne([S ii]) ne([S iii])

000.0-6.8 3700 3300
000.7+3.2 1900 1000
000.7+4.7 9500 8000
001.2+2.1 3000 1600
001.4+5.3 950 2700
001.7-4.6 2000 3000
002.4-3.7 4200 5000
002.6-3.4 4300 3200
002.8+1.7 4800 3000
004.9-4.9 1800 2500
006.0-3.6 5200 4000
008.2+6.8 17 000 5800
351.2+5.3 1500 1600
354.2+4.3 1400 1500
356.5-2.3 4000 3800
357.1-4.7 6500
358.9+3.2 4400 5000
358.9-3.7 5000 6000
359.3-1.8 2000 3000

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