Table 2: Basic observational parameters for all data used: Object name, observing date (in 2005), filter, flux and full width half maximum for standard star (STD) and science observations. As error estimates we use the standard deviation of all contributing beams (see section 2 for details). The FWHM are the average of all beams of one exposure. All science and corresponding STD exposures were obtained within a maximum airmass difference of 0.15.
Object Obs. date Filter* Flux [mJy] FWHM [ $\hbox{$^{\prime\prime}$ }$] Object Obs. date Filter* Flux [mJy] FWHM [ $\hbox{$^{\prime\prime}$ }$]
  (MM-DD)     STD Obj   (MM-DD)     STD Obj
Fairall 9 07-21 SIV $256 \pm 5$ 0.32 0.35 NGC 4593 04-30 SIV $331 \pm 29$ 0.30 0.31
Fairall 9 07-21 NeIIref1 $330 \pm 18$ 0.38 0.37 NGC 4593 04-30 PAH2ref2 $335 \pm 26$ 0.33 0.33
Fairall 9 07-21 NeII $306 \pm 10$ 0.40 0.37 NGC 4593 04-30 NeIIref1 $382 \pm 73$ 0.34 0.36
Fairall 9 07-21 SIV $235 \pm 13$ 0.32 0.34 PKS 2048-57 06-10 PAH2ref2 $883 \pm 53$ 0.38 0.40
NGC 526a 07-20 SIV $199 \pm 26$ 0.41 0.30 PKS 2048-57 06-10 NeIIref1 $1040 \pm 64$ 0.41 0.43
NGC 526a 07-20 NeIIref1 $275 \pm 55$ 0.41 0.35 PKS 2048-57 06-10 SIV $655 \pm 28$ 0.37 0.39
NGC 526a 07-20 SIV $199 \pm 22$ 0.41 0.32 PG 2130+099 06-10 PAH2 $152 \pm 8$ 0.39 0.38
NGC 3783 04-17 SIV $568 \pm 46$ 0.29 0.31 PG 2130+099 06-10 SIVref1 $115 \pm 20$ 0.35 0.36
NGC 3783 04-17 PAH2ref2 $632 \pm 22$ 0.34 0.35 PG 2130+099 06-10 NeII $179 \pm 31$ 0.41 0.43
NGC 3783 04-17 NeIIref1 $722 \pm 67$ 0.34 0.36 PG 2130+099 06-10 PAH2 $174 \pm 17$ 0.39 0.40
NGC 4579 04-30 SIV $67 \pm 17$ 0.30 0.25 NGC 7314 07-20 SIV $75 \pm 29$ 0.40 0.36
NGC 4579 04-30 PAH2ref2 $69 \pm 14$ 0.33 0.29 NGC 7314 07-20 PAH2 $75 \pm 22$ 0.36 0.37
NGC 4579 04-30 NeIIref1 $61 \pm 21$ 0.34 0.30 NGC 7314 07-20 SIV $87 \pm 37$ 0.40 0.34
NGC 4579 04-30 SIV $64 \pm 12$ 0.30 0.32            
* The central wavelengths for the individual filters are $9.82 ~ \mu$m for SIVref1, $10.49 ~ \mu$m for SIV, $11.25 ~ \mu$m for PAH, $11.88 ~ \mu$m for PAH2ref2, $12.27 ~ \mu$m for NeIIref1 and $12.81 ~ \mu$m for NeII. Their transmission curves are shown in the VISIR User's manual at http://www.eso.org/instruments/visir/

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