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000005305 001__ 5305 000005305 005__ 20210301150641.0 000005305 037__ $$aDATASET-2021-0034 000005305 100__ $$aClette, Frédéric 000005305 245__ $$aReal-time Estimated International Sunspot Number 000005305 260__ $$c2020 000005305 520__ $$aNear real-time sunspot numbers, updated every 5 minutes. 000005305 594__ $$aSTCE 000005305 700__ $$aLefèvre, Laure 000005305 8560_ $$ffrederic.clette@observatoire.be 000005305 85642 $$ahttp://www.sidc.be/silso/datafiles 000005305 980__ $$aDATASET