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NINO index # 4 (5=3.4) from CPC, interpolated from weekly to daily values, SSTa [Celsius], (eps, pdf, metadata, raw data, netcdf)
Annual cycles, computed with all data available (Jan-Dec: eps, pdf, raw data,. Jul-Jun: eps, pdf, raw data).
Jul-Jun annual cycle of  NINO4 Jan-Dec annual cycle of  NINO4
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