**Table 1:** Measurements for the clusters M 1, M 3, M 6 and M 8 in NCG 1808.
	M 1		M 3		M 6		M 8
Positions with respect to M 1 [arcsec]
$\Delta\alpha$ [arcsec]	0		- $1.99 \pm 0.1$		$5.82\pm0.1$		$2.71 \pm 0.1$
$\Delta\delta$ [arcsec]	0		- $3.76 \pm 0.1$		- $5.25 \pm 0.1$		- $5.51\pm0.1$
Flux densities [mJy]
	Value		Value		Value		Value
	Low	High	Low	High	Low	High	Low	High
R	2.2	3.1	0	0.2	0	0.2	0	0.2
J	11.	20.	0	1.2	0	1.3	0	1.7
Ks	22.	39.	0	2.0	0	2.2	0	2.9
L'	17.	38.	0	2.8	0	3.4	0.4	4.8
10.4 $\rm ~\mu m$	180.	280.	0	12.	0	11.	6.4	23.
11.9 $\rm ~\mu m$	400.	670.	11.	50.	10.	76.	18.	99.
12.9 $\rm ~\mu m$	700.	1100.	25.	90.	29.	110.	95.	220.
Line fluxes [10^-15 erg s $^{-1}~{\rm cm}^{-2}$ ]
^*Pa ${\alpha}$	$150.\pm 30$ .		$49.\pm 10$ .		$9.9\pm 2.0$		$24.\pm 5$ .
^*Br ${\delta}$	<4.		<1.4		$3.9\pm0.8$		$2.8\pm 0.6$
H₂ 1-0S(3)	<12.		<1.2		<1.6		<1.6
H₂ 1-0S(2)	<10.		<0.6		$0.8 \pm0.2$		$1.1\pm0.3$
HeI	<5.		$1.3\pm0.3$		$2.1\pm0.5$		$2.2\pm0.5$
H₂ 1-0S(1)	$5.8 \pm 1.2$		$0.9\pm 0.2$		$1.2 \pm 0.3$		$1.3\pm0.3$
Br ${\gamma }$	$9.6 \pm 1.9$		$2.6 \pm0.6$		$5.4 \pm 1.1$		$4.2 \pm 0.9$
H₂ 1-0S(0)	<2.		<0.5		$0.6\pm 0.2$		$0.8 \pm0.2$
H₂ 2-1S(1)	<2.		<0.5		$0.6\pm 0.2$		<6.5
H₂ 1-0Q(1)	<5.5		$1.0 \pm0.2$		$1.7 \pm0.4$		$1.5\pm 0.3$
H₂ 1-0Q(3)	<5.5		$1.2 \pm 0.3$		$1.0 \pm0.2$		$1.1\pm0.3$
PAH+Pf ${\delta}$	-		-		$84.\pm 17.$		$100.\pm 20.$
Pf ${\gamma }$	-		-		$3.2 \pm 0.7$		$5.4 \pm 1.1$
Br ${\alpha}$	-		-		$20.\pm 4$ .		$25.\pm 5.$
Radio data (Collison et al. 1994)
$\alpha^{\rm 6~cm}_{\rm 3.6~cm}$	-0.61		-0.28		-		-0.57
3.6 cm [mJy]	8.96		0.93		0.58		0.76

^* These flux values and their associated uncertainties must be taken with caution
since the atmospheric features are strong in this region of the spectrum.

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