Photospheric magnetic fields are studied using synoptic maps from 1976 to 2003 produced at the National Solar Observatory, Kitt Peak (NSO/KP). Synoptic maps were averaged over the time interval of nearly three solar cycles (Solar Cycles 21 – 23). The change in the latitudinal distribution was considered for the following groups of magnetic field values: B=0–5G\documentclass[12pt]{minimal}
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\begin{document}$B = 0 \,\mbox{--}\, 5~\mbox{G}$\end{document}, B=5–15G\documentclass[12pt]{minimal}
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\begin{document}$B = 5 \,\mbox{--}\, 15~\mbox{G}$\end{document}, B=15–50G\documentclass[12pt]{minimal}
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\begin{document}$B = 15 \,\mbox{--}\, 50~\mbox{G}$\end{document}, and B>50G\documentclass[12pt]{minimal}
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\begin{document}$B > 50~\mbox{G}$\end{document}.