Question

1. what years were el nino years? la nina years?

Explanation:

El Nino is associated with above - average temperatures (positive values in the "Degrees C Above or Below Average" column), and La Nina is associated with below - average temperatures (negative values in the column).

Answer:

El Nino: 1989, 1990, 1991, 1992, 1993, 1994, 1997
La Nina: 1988, 1995, 1996