Fig. 4

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Objects from the G22 catalog that are unlikely to be true SNRs. MIR data are in the left panels (Spitzer or WISE) and SMGPS 1.3 GHz data in the right. The symbols have the same meaning as in Fig. 1, with the G22 SNRs indicated by dashed blue-green circles at the centers of all panels. Yellow scale bars at the lower left of each panel are 5′ long.
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