Yearly hemispheric radio fluxes calculated at different helio-latitude intervals in 1948–2021. Top panel: all-hemispheric means of radio fluxes for the northern (N; blue line) and southern (S; red line) hemisphere in each year, together with the yearly mean radio flux (black line). Second panel: high-latitude (High), second high-latitude (2 High), and all-hemispheric radio fluxes for the northern (blueish colors) and southern (reddish colors) hemisphere. The seven small plots on the third and bottom row depict an enlarged view of the second panel, one for each of the seven solar cycle maxima. All fluxes are given in units of sfu.