Table 3: Mean flux and SFR ratios for the different samples. Extremely discrepant points (if any) have been discarded before performing the calculation.
Sample $\left<{F_{\rm IR8.0}/(F_{\rm IR4.5}-\alpha F_{\rm IR3.6}})\right>$ $\left<\left[8.0\right]/\left[{\rm NUV}\right]\right>$ $\left<\left[{\rm H}\alpha\right]/\left[{\rm NUV}\right]\right>$

NGC 5291 $21\pm17$ $0.5\pm0.4$ $0.5\pm0.2$

Rosenberg $17\pm12$ - -

SINGS $25\pm16$ $3.3\pm7.0$ -

Engelbracht $24\pm23$ - -

M 51 - $4.2\pm5.5$ $1.1\pm1.3$

M 81 $50\pm35$ $1.2\pm0.9$ $2.8\pm2.2$

Arp 82 $45\pm24$ $1.8\pm1.8$ $1.0\pm0.7$

**Table 3:** Mean flux and SFR ratios for the different samples. Extremely discrepant points (if any) have been discarded before performing the calculation.
Sample	$\left<{F_{\rm IR8.0}/(F_{\rm IR4.5}-\alpha F_{\rm IR3.6}})\right>$	$\left<\left[8.0\right]/\left[{\rm NUV}\right]\right>$	$\left<\left[{\rm H}\alpha\right]/\left[{\rm NUV}\right]\right>$
NGC 5291	$21\pm17$	$0.5\pm0.4$	$0.5\pm0.2$
Rosenberg	$17\pm12$	-	-
SINGS	$25\pm16$	$3.3\pm7.0$	-
Engelbracht	$24\pm23$	-	-
M 51	-	$4.2\pm5.5$	$1.1\pm1.3$
M 81	$50\pm35$	$1.2\pm0.9$	$2.8\pm2.2$
Arp 82	$45\pm24$	$1.8\pm1.8$	$1.0\pm0.7$

Source LaTeX | All tables | In the text