Table 4: Mid-infrared observations and results.
Filter $t_{\rm int}$ Airmass primary secondary

$\mu$ m (s) (mJy) (mJy)

HD 199143

11.7 216 1.53 $144 \pm 16$ $32 \pm 4$

17.65 240 1.55 $66 \pm 25$ $41 \pm 14$

HD 358623

8.9 144 1.90 $62 \pm 9$ $34 \pm 7$

11.7 240 2.2 $35 \pm 5$ $15 \pm 4$

17.65 360 2.1 <20 <20

**Table 4:** Mid-infrared observations and results.
Filter	$t_{\rm int}$	Airmass	primary	secondary
$\mu$ m	(s)		(mJy)	(mJy)
HD 199143
11.7	216	1.53	$144 \pm 16$	$32 \pm 4$
17.65	240	1.55	$66 \pm 25$	$41 \pm 14$
HD 358623
8.9	144	1.90	$62 \pm 9$	$34 \pm 7$
11.7	240	2.2	$35 \pm 5$	$15 \pm 4$
17.65	360	2.1	<20	<20

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