Verification of 4-Month Lead Forecast of 3-Month Average Nino3.4 SST Anomalies

I.c. TimeFcst Time1950-20051950-992000-05
H-OP-OH-OP-OH-OP-O
JAJFM0.850.860.840.850.980.99
ASFMA0.820.800.810.790.970.94
SOMAM0.760.690.750.680.890.81
ONAMJ0.560.470.550.460.660.51
NDMJJ0.390.240.380.230.620.42
DJJJA0.390.100.360.080.800.47
JFJAS0.560.080.570.050.950.60
FMASO0.570.140.600.110.810.63
MASON0.640.300.670.280.720.62
AMOND0.720.490.750.480.830.64
MJNDJ0.780.710.800.720.870.59
JJDJF0.820.850.820.860.890.71
ALL0.680.410.680.400.720.50