Series

Model

AIC

SBC

SPI

SARIMA(2,1,2)x(1,0,2)12

26.229

46.403

SARIMA(0,1,0)x(2,0,0)12

38.248

45.91

SPEI

SARIMA(1,1,1)x(2,0,1)12

14.554

29.814

SARIMA(0,1,0)x(2,0,1)12

15.946

26.162