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Austral summer scPDSI maps of historical extremely dry/wet events in three regions from the SADA domain. (A) The silver mine drought of Potosí, Bolivia (1800 to 1804). (B) The central Chile drought of 1863 (1863 to 1866). (C) Santa Fe city floods (1651, 1723). The red stars indicate the geographic location of these recorded historical events.
