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These fields are approximately centered on (l, b) = (0.0{\\deg}, 1.0{\\deg}), (0.0{\\deg}, -1.0{\\deg}), (0.4{\\deg}, -2.1{\\deg}) and (1.0{\\deg}, -3.8{\\deg}), respectively. Far-infrared photometric observations complement the Spitzer/IRS spectroscopic data and are used to construct spectral energy distributions. 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