Warm ENSO anomalies with respect to neutral conditions, by season
1982-83, 86-87, 91-92, 97-98, 2002-2003
based on Dec-Jan Nino3.4 being greater than 0.99C


Mar-May(0)
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Jun-Aug(0)
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Sep-Nov(0)
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Dec(0)-Feb(1)
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Mar-May(1)
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