FIGURE T4. Five-month running mean and individual monthly mean ("x"s) of the standardized 850-hPa zonal wind anomaly index in the latitude belt 5�N�5�S for 135�E�180� (top), 175�W�140�W (middle) and 135�W�120�W (bottom). Anomalies are departures from the 1979�95 base period means and are normalized by the mean annual standard deviation.The x-axis labels are centered on July. Positive (negative) values indicate easterly (westerly) anomalies.