Fig. 4.

image

Results of fitting LOFAR, CGPS, and Effelsberg data to Eq. (1). Top left: best-fit amplitude S150 MHz and top right: error in best-fit amplitude ΔS150 MHz. Bottom left: best-fit spectral index value α and bottom right: error in spectral index Δα. The contours are those of the best-fit amplitude S150 MHz.

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