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Fig. 1.
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‘Spectral index-flux density’ relation for two different frequency samples. (a): αmedian − S340 MHz plot (Sects. 2 and 3.1), with the data for each of the 12 flux density bins listed in Table 1. (b): αmedian − S54 MHz plot (Sects. 2 and 3.2), with the data for each of the eight flux density bins listed in Table 2.
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