All Tables

Table 1: Central star temperatures and nebular parameters. Chemical abundances are expressed in $12+\log~(X$ /H). The line fluxes $F_{\rm H\alpha }$ and $F_{\rm [OIII]}$ as observed by M 00. The adopted reddening correction is E(B-V)=0.07 (van den Bergh 2000).
Table 2: Comparison between CLOUDY abundance determinations with either blackbody central star and a constant density, with model atmosphere by Rauch (2003), and with BB and a density falling off as r^-2 (two PNe). The last raw gives the ICF abundance determinations (M 03).