Table 1: Years used in composite analysis for moderate to strong El Niño, moderate to strong La Niña, and neutral years. Composites based on JJA EIS values normalized by JJA standard deviation.

El Niño: 1982, 1987, 1991, 1997, 2002, 2004, 2009
La Niña:1988, 1999
Neutral:1979, 1980, 1983, 1984, 1986, 1989, 1990, 1995, 1996, 2001, 2006, 2007, 2008