Next past The result of the relationship between the Nino 3,Nino 3.4 SST index and the standardized PCof December, October and November (DJF) at various lag times. shown in this table. The highest correlation of 0.53361 and 0.50076 indicates that the Niño3 and Niño 3.4 SST index leads the standardized PC values by 3 month.