| CPC_Indices | Northern Hemispheric Teleconnection Indices from the Climate Prediction Center.
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| Darwin | Sea level pressure data from Darwin, Australia.
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| Easter Island | Sea level pressure data from Easter Island.
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| HANSEN | Analysis of average global temperature at annual, seasonal, and monthly time scales.
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| All India | Summer monsoon rainfall data from India.
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| North Atlantic Oscillation Index | North Atlantic Oscillation Index.
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| nino | Indices representative of the NINO 1 and 2, NINO 3, NINO 3.4, and NINO 4 regions.
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| Southern Oscillation Index | Southern Oscillation Index.
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| standardized | Standardized Southern Oscillation Index.
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| Tahiti | Sea level pressure data from Tahiti.
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