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Fig. 2

Electron temperature and density of NGC 6803. Top: with the 1995 data. (Number 2: from a short 3 min. exposure. Unspecified diagnostic lines are from the 120 min. exposure data.) Bottom: with the 2001 data. (Numbers 3 and 4: 60 and 5 min. exposures. The unspecified diagnostics are from the 60 min. one.)
This figure is made of several images, please see below:
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