Table of
| Training period | Time | Forecast Lead Time in Months | hindcast time |
|---|---|---|---|
| months since 1960-01-01 | months since 1960-01-01 | months | months since 1960-01-01 |
| 1980 | Sep 1960 | 2.5 | Oct-Dec 1980 |
| 1981 | Sep 1960 | 2.5 | Oct-Dec 1981 |
| 1982 | Sep 1960 | 2.5 | Oct-Dec 1982 |
| 1983 | Sep 1960 | 2.5 | Oct-Dec 1983 |
| 1984 | Sep 1960 | 2.5 | Oct-Dec 1984 |
| 1985 | Sep 1960 | 2.5 | Oct-Dec 1985 |
| 1986 | Sep 1960 | 2.5 | Oct-Dec 1986 |
| 1987 | Sep 1960 | 2.5 | Oct-Dec 1987 |
| 1988 | Sep 1960 | 2.5 | Oct-Dec 1988 |
| 1989 | Sep 1960 | 2.5 | Oct-Dec 1989 |
| 1990 | Sep 1960 | 2.5 | Oct-Dec 1990 |
| 1991 | Sep 1960 | 2.5 | Oct-Dec 1991 |
| 1992 | Sep 1960 | 2.5 | Oct-Dec 1992 |
| 1993 | Sep 1960 | 2.5 | Oct-Dec 1993 |
| 1994 | Sep 1960 | 2.5 | Oct-Dec 1994 |
| 1995 | Sep 1960 | 2.5 | Oct-Dec 1995 |
| 1996 | Sep 1960 | 2.5 | Oct-Dec 1996 |
| 1997 | Sep 1960 | 2.5 | Oct-Dec 1997 |
| 1998 | Sep 1960 | 2.5 | Oct-Dec 1998 |
| 1999 | Sep 1960 | 2.5 | Oct-Dec 1999 |
| 2000 | Sep 1960 | 2.5 | Oct-Dec 2000 |
| 2001 | Sep 1960 | 2.5 | Oct-Dec 2001 |
| 2002 | Sep 1960 | 2.5 | Oct-Dec 2002 |
| 2003 | Sep 1960 | 2.5 | Oct-Dec 2003 |
| 2004 | Sep 1960 | 2.5 | Oct-Dec 2004 |
| 2005 | Sep 1960 | 2.5 | Oct-Dec 2005 |
| 2006 | Sep 1960 | 2.5 | Oct-Dec 2006 |
| 2007 | Sep 1960 | 2.5 | Oct-Dec 2007 |
| 2008 | Sep 1960 | 2.5 | Oct-Dec 2008 |
| 2009 | Sep 1960 | 2.5 | Oct-Dec 2009 |
| 2010 | Sep 1960 | 2.5 | Oct-Dec 2010 |
| 2011 | Sep 1960 | 2.5 | Oct-Dec 2011 |
| 1980 | Oct 1960 | 2.5 | Nov 1980 - Jan 1981 |
| 1981 | Oct 1960 | 2.5 | Nov 1981 - Jan 1982 |
| 1982 | Oct 1960 | 2.5 | Nov 1982 - Jan 1983 |
| 1983 | Oct 1960 | 2.5 | Nov 1983 - Jan 1984 |
| 1984 | Oct 1960 | 2.5 | Nov 1984 - Jan 1985 |
| 1985 | Oct 1960 | 2.5 | Nov 1985 - Jan 1986 |
| 1986 | Oct 1960 | 2.5 | Nov 1986 - Jan 1987 |
| 1987 | Oct 1960 | 2.5 | Nov 1987 - Jan 1988 |
| 1988 | Oct 1960 | 2.5 | Nov 1988 - Jan 1989 |
| 1989 | Oct 1960 | 2.5 | Nov 1989 - Jan 1990 |
| 1990 | Oct 1960 | 2.5 | Nov 1990 - Jan 1991 |
| 1991 | Oct 1960 | 2.5 | Nov 1991 - Jan 1992 |
| 1992 | Oct 1960 | 2.5 | Nov 1992 - Jan 1993 |
| 1993 | Oct 1960 | 2.5 | Nov 1993 - Jan 1994 |
| 1994 | Oct 1960 | 2.5 | Nov 1994 - Jan 1995 |
| 1995 | Oct 1960 | 2.5 | Nov 1995 - Jan 1996 |
| 1996 | Oct 1960 | 2.5 | Nov 1996 - Jan 1997 |
| 1997 | Oct 1960 | 2.5 | Nov 1997 - Jan 1998 |
| 1998 | Oct 1960 | 2.5 | Nov 1998 - Jan 1999 |
| 1999 | Oct 1960 | 2.5 | Nov 1999 - Jan 2000 |
| 2000 | Oct 1960 | 2.5 | Nov 2000 - Jan 2001 |
| 2001 | Oct 1960 | 2.5 | Nov 2001 - Jan 2002 |
| 2002 | Oct 1960 | 2.5 | Nov 2002 - Jan 2003 |
| 2003 | Oct 1960 | 2.5 | Nov 2003 - Jan 2004 |
| 2004 | Oct 1960 | 2.5 | Nov 2004 - Jan 2005 |
| 2005 | Oct 1960 | 2.5 | Nov 2005 - Jan 2006 |
| 2006 | Oct 1960 | 2.5 | Nov 2006 - Jan 2007 |
| 2007 | Oct 1960 | 2.5 | Nov 2007 - Jan 2008 |
| 2008 | Oct 1960 | 2.5 | Nov 2008 - Jan 2009 |
| 2009 | Oct 1960 | 2.5 | Nov 2009 - Jan 2010 |
| 2010 | Oct 1960 | 2.5 | Nov 2010 - Jan 2011 |
| 2011 | Oct 1960 | 2.5 | Nov 2011 - Jan 2012 |
| 1980 | Nov 1960 | 2.5 | Dec 1980 - Feb 1981 |
| 1981 | Nov 1960 | 2.5 | Dec 1981 - Feb 1982 |
| 1982 | Nov 1960 | 2.5 | Dec 1982 - Feb 1983 |
| 1983 | Nov 1960 | 2.5 | Dec 1983 - Feb 1984 |
| 1984 | Nov 1960 | 2.5 | Dec 1984 - Feb 1985 |
| 1985 | Nov 1960 | 2.5 | Dec 1985 - Feb 1986 |
| 1986 | Nov 1960 | 2.5 | Dec 1986 - Feb 1987 |
| 1987 | Nov 1960 | 2.5 | Dec 1987 - Feb 1988 |
| 1988 | Nov 1960 | 2.5 | Dec 1988 - Feb 1989 |
| 1989 | Nov 1960 | 2.5 | Dec 1989 - Feb 1990 |
| 1990 | Nov 1960 | 2.5 | Dec 1990 - Feb 1991 |
| 1991 | Nov 1960 | 2.5 | Dec 1991 - Feb 1992 |
| 1992 | Nov 1960 | 2.5 | Dec 1992 - Feb 1993 |
| 1993 | Nov 1960 | 2.5 | Dec 1993 - Feb 1994 |
| 1994 | Nov 1960 | 2.5 | Dec 1994 - Feb 1995 |
| 1995 | Nov 1960 | 2.5 | Dec 1995 - Feb 1996 |
| 1996 | Nov 1960 | 2.5 | Dec 1996 - Feb 1997 |
| 1997 | Nov 1960 | 2.5 | Dec 1997 - Feb 1998 |
| 1998 | Nov 1960 | 2.5 | Dec 1998 - Feb 1999 |
| 1999 | Nov 1960 | 2.5 | Dec 1999 - Feb 2000 |
| 2000 | Nov 1960 | 2.5 | Dec 2000 - Feb 2001 |
| 2001 | Nov 1960 | 2.5 | Dec 2001 - Feb 2002 |
| 2002 | Nov 1960 | 2.5 | Dec 2002 - Feb 2003 |
| 2003 | Nov 1960 | 2.5 | Dec 2003 - Feb 2004 |
| 2004 | Nov 1960 | 2.5 | Dec 2004 - Feb 2005 |
| 2005 | Nov 1960 | 2.5 | Dec 2005 - Feb 2006 |
| 2006 | Nov 1960 | 2.5 | Dec 2006 - Feb 2007 |
| 2007 | Nov 1960 | 2.5 | Dec 2007 - Feb 2008 |
| 2008 | Nov 1960 | 2.5 | Dec 2008 - Feb 2009 |
| 2009 | Nov 1960 | 2.5 | Dec 2009 - Feb 2010 |
| 2010 | Nov 1960 | 2.5 | Dec 2010 - Feb 2011 |
| 2011 | Nov 1960 | 2.5 | Dec 2011 - Feb 2012 |
| 1980 | Sep 1960 | 3.5 | Nov 1980 - Jan 1981 |
| 1981 | Sep 1960 | 3.5 | Nov 1981 - Jan 1982 |
| 1982 | Sep 1960 | 3.5 | Nov 1982 - Jan 1983 |
| 1983 | Sep 1960 | 3.5 | Nov 1983 - Jan 1984 |
| 1984 | Sep 1960 | 3.5 | Nov 1984 - Jan 1985 |
| 1985 | Sep 1960 | 3.5 | Nov 1985 - Jan 1986 |
| 1986 | Sep 1960 | 3.5 | Nov 1986 - Jan 1987 |
| 1987 | Sep 1960 | 3.5 | Nov 1987 - Jan 1988 |
| 1988 | Sep 1960 | 3.5 | Nov 1988 - Jan 1989 |
| 1989 | Sep 1960 | 3.5 | Nov 1989 - Jan 1990 |
| 1990 | Sep 1960 | 3.5 | Nov 1990 - Jan 1991 |
| 1991 | Sep 1960 | 3.5 | Nov 1991 - Jan 1992 |
| 1992 | Sep 1960 | 3.5 | Nov 1992 - Jan 1993 |
| 1993 | Sep 1960 | 3.5 | Nov 1993 - Jan 1994 |
| 1994 | Sep 1960 | 3.5 | Nov 1994 - Jan 1995 |
| 1995 | Sep 1960 | 3.5 | Nov 1995 - Jan 1996 |
| 1996 | Sep 1960 | 3.5 | Nov 1996 - Jan 1997 |
| 1997 | Sep 1960 | 3.5 | Nov 1997 - Jan 1998 |
| 1998 | Sep 1960 | 3.5 | Nov 1998 - Jan 1999 |
| 1999 | Sep 1960 | 3.5 | Nov 1999 - Jan 2000 |
| 2000 | Sep 1960 | 3.5 | Nov 2000 - Jan 2001 |
| 2001 | Sep 1960 | 3.5 | Nov 2001 - Jan 2002 |
| 2002 | Sep 1960 | 3.5 | Nov 2002 - Jan 2003 |
| 2003 | Sep 1960 | 3.5 | Nov 2003 - Jan 2004 |
| 2004 | Sep 1960 | 3.5 | Nov 2004 - Jan 2005 |
| 2005 | Sep 1960 | 3.5 | Nov 2005 - Jan 2006 |
| 2006 | Sep 1960 | 3.5 | Nov 2006 - Jan 2007 |
| 2007 | Sep 1960 | 3.5 | Nov 2007 - Jan 2008 |
| 2008 | Sep 1960 | 3.5 | Nov 2008 - Jan 2009 |
| 2009 | Sep 1960 | 3.5 | Nov 2009 - Jan 2010 |
| 2010 | Sep 1960 | 3.5 | Nov 2010 - Jan 2011 |
| 2011 | Sep 1960 | 3.5 | Nov 2011 - Jan 2012 |
| 1980 | Oct 1960 | 3.5 | Dec 1980 - Feb 1981 |
| 1981 | Oct 1960 | 3.5 | Dec 1981 - Feb 1982 |
| 1982 | Oct 1960 | 3.5 | Dec 1982 - Feb 1983 |
| 1983 | Oct 1960 | 3.5 | Dec 1983 - Feb 1984 |
| 1984 | Oct 1960 | 3.5 | Dec 1984 - Feb 1985 |
| 1985 | Oct 1960 | 3.5 | Dec 1985 - Feb 1986 |
| 1986 | Oct 1960 | 3.5 | Dec 1986 - Feb 1987 |
| 1987 | Oct 1960 | 3.5 | Dec 1987 - Feb 1988 |
| 1988 | Oct 1960 | 3.5 | Dec 1988 - Feb 1989 |
| 1989 | Oct 1960 | 3.5 | Dec 1989 - Feb 1990 |
| 1990 | Oct 1960 | 3.5 | Dec 1990 - Feb 1991 |
| 1991 | Oct 1960 | 3.5 | Dec 1991 - Feb 1992 |
| 1992 | Oct 1960 | 3.5 | Dec 1992 - Feb 1993 |
| 1993 | Oct 1960 | 3.5 | Dec 1993 - Feb 1994 |
| 1994 | Oct 1960 | 3.5 | Dec 1994 - Feb 1995 |
| 1995 | Oct 1960 | 3.5 | Dec 1995 - Feb 1996 |
| 1996 | Oct 1960 | 3.5 | Dec 1996 - Feb 1997 |
| 1997 | Oct 1960 | 3.5 | Dec 1997 - Feb 1998 |
| 1998 | Oct 1960 | 3.5 | Dec 1998 - Feb 1999 |
| 1999 | Oct 1960 | 3.5 | Dec 1999 - Feb 2000 |
| 2000 | Oct 1960 | 3.5 | Dec 2000 - Feb 2001 |
| 2001 | Oct 1960 | 3.5 | Dec 2001 - Feb 2002 |
| 2002 | Oct 1960 | 3.5 | Dec 2002 - Feb 2003 |
| 2003 | Oct 1960 | 3.5 | Dec 2003 - Feb 2004 |
| 2004 | Oct 1960 | 3.5 | Dec 2004 - Feb 2005 |
| 2005 | Oct 1960 | 3.5 | Dec 2005 - Feb 2006 |
| 2006 | Oct 1960 | 3.5 | Dec 2006 - Feb 2007 |
| 2007 | Oct 1960 | 3.5 | Dec 2007 - Feb 2008 |
| 2008 | Oct 1960 | 3.5 | Dec 2008 - Feb 2009 |
| 2009 | Oct 1960 | 3.5 | Dec 2009 - Feb 2010 |
| 2010 | Oct 1960 | 3.5 | Dec 2010 - Feb 2011 |
| 2011 | Oct 1960 | 3.5 | Dec 2011 - Feb 2012 |
| 1980 | Nov 1960 | 3.5 | Jan-Mar 1981 |
| 1981 | Nov 1960 | 3.5 | Jan-Mar 1982 |
| 1982 | Nov 1960 | 3.5 | Jan-Mar 1983 |
| 1983 | Nov 1960 | 3.5 | Jan-Mar 1984 |
| 1984 | Nov 1960 | 3.5 | Jan-Mar 1985 |
| 1985 | Nov 1960 | 3.5 | Jan-Mar 1986 |
| 1986 | Nov 1960 | 3.5 | Jan-Mar 1987 |
| 1987 | Nov 1960 | 3.5 | Jan-Mar 1988 |
| 1988 | Nov 1960 | 3.5 | Jan-Mar 1989 |
| 1989 | Nov 1960 | 3.5 | Jan-Mar 1990 |
| 1990 | Nov 1960 | 3.5 | Jan-Mar 1991 |
| 1991 | Nov 1960 | 3.5 | Jan-Mar 1992 |
| 1992 | Nov 1960 | 3.5 | Jan-Mar 1993 |
| 1993 | Nov 1960 | 3.5 | Jan-Mar 1994 |
| 1994 | Nov 1960 | 3.5 | Jan-Mar 1995 |
| 1995 | Nov 1960 | 3.5 | Jan-Mar 1996 |
| 1996 | Nov 1960 | 3.5 | Jan-Mar 1997 |
| 1997 | Nov 1960 | 3.5 | Jan-Mar 1998 |
| 1998 | Nov 1960 | 3.5 | Jan-Mar 1999 |
| 1999 | Nov 1960 | 3.5 | Jan-Mar 2000 |
| 2000 | Nov 1960 | 3.5 | Jan-Mar 2001 |
| 2001 | Nov 1960 | 3.5 | Jan-Mar 2002 |
| 2002 | Nov 1960 | 3.5 | Jan-Mar 2003 |
| 2003 | Nov 1960 | 3.5 | Jan-Mar 2004 |
| 2004 | Nov 1960 | 3.5 | Jan-Mar 2005 |
| 2005 | Nov 1960 | 3.5 | Jan-Mar 2006 |
| 2006 | Nov 1960 | 3.5 | Jan-Mar 2007 |
| 2007 | Nov 1960 | 3.5 | Jan-Mar 2008 |
| 2008 | Nov 1960 | 3.5 | Jan-Mar 2009 |
| 2009 | Nov 1960 | 3.5 | Jan-Mar 2010 |
| 2010 | Nov 1960 | 3.5 | Jan-Mar 2011 |
| 2011 | Nov 1960 | 3.5 | Jan-Mar 2012 |
| 1980 | Sep 1960 | 4.5 | Dec 1980 - Feb 1981 |
| 1981 | Sep 1960 | 4.5 | Dec 1981 - Feb 1982 |
| 1982 | Sep 1960 | 4.5 | Dec 1982 - Feb 1983 |
| 1983 | Sep 1960 | 4.5 | Dec 1983 - Feb 1984 |
| 1984 | Sep 1960 | 4.5 | Dec 1984 - Feb 1985 |
| 1985 | Sep 1960 | 4.5 | Dec 1985 - Feb 1986 |
| 1986 | Sep 1960 | 4.5 | Dec 1986 - Feb 1987 |
| 1987 | Sep 1960 | 4.5 | Dec 1987 - Feb 1988 |
| 1988 | Sep 1960 | 4.5 | Dec 1988 - Feb 1989 |
| 1989 | Sep 1960 | 4.5 | Dec 1989 - Feb 1990 |
| 1990 | Sep 1960 | 4.5 | Dec 1990 - Feb 1991 |
| 1991 | Sep 1960 | 4.5 | Dec 1991 - Feb 1992 |
| 1992 | Sep 1960 | 4.5 | Dec 1992 - Feb 1993 |
| 1993 | Sep 1960 | 4.5 | Dec 1993 - Feb 1994 |
| 1994 | Sep 1960 | 4.5 | Dec 1994 - Feb 1995 |
| 1995 | Sep 1960 | 4.5 | Dec 1995 - Feb 1996 |
| 1996 | Sep 1960 | 4.5 | Dec 1996 - Feb 1997 |
| 1997 | Sep 1960 | 4.5 | Dec 1997 - Feb 1998 |
| 1998 | Sep 1960 | 4.5 | Dec 1998 - Feb 1999 |
| 1999 | Sep 1960 | 4.5 | Dec 1999 - Feb 2000 |
| 2000 | Sep 1960 | 4.5 | Dec 2000 - Feb 2001 |
| 2001 | Sep 1960 | 4.5 | Dec 2001 - Feb 2002 |
| 2002 | Sep 1960 | 4.5 | Dec 2002 - Feb 2003 |
| 2003 | Sep 1960 | 4.5 | Dec 2003 - Feb 2004 |
| 2004 | Sep 1960 | 4.5 | Dec 2004 - Feb 2005 |
| 2005 | Sep 1960 | 4.5 | Dec 2005 - Feb 2006 |
| 2006 | Sep 1960 | 4.5 | Dec 2006 - Feb 2007 |
| 2007 | Sep 1960 | 4.5 | Dec 2007 - Feb 2008 |
| 2008 | Sep 1960 | 4.5 | Dec 2008 - Feb 2009 |
| 2009 | Sep 1960 | 4.5 | Dec 2009 - Feb 2010 |
| 2010 | Sep 1960 | 4.5 | Dec 2010 - Feb 2011 |
| 2011 | Sep 1960 | 4.5 | Dec 2011 - Feb 2012 |
| 1980 | Oct 1960 | 4.5 | Jan-Mar 1981 |
| 1981 | Oct 1960 | 4.5 | Jan-Mar 1982 |
| 1982 | Oct 1960 | 4.5 | Jan-Mar 1983 |
| 1983 | Oct 1960 | 4.5 | Jan-Mar 1984 |
| 1984 | Oct 1960 | 4.5 | Jan-Mar 1985 |
| 1985 | Oct 1960 | 4.5 | Jan-Mar 1986 |
| 1986 | Oct 1960 | 4.5 | Jan-Mar 1987 |
| 1987 | Oct 1960 | 4.5 | Jan-Mar 1988 |
| 1988 | Oct 1960 | 4.5 | Jan-Mar 1989 |
| 1989 | Oct 1960 | 4.5 | Jan-Mar 1990 |
| 1990 | Oct 1960 | 4.5 | Jan-Mar 1991 |
| 1991 | Oct 1960 | 4.5 | Jan-Mar 1992 |
| 1992 | Oct 1960 | 4.5 | Jan-Mar 1993 |
| 1993 | Oct 1960 | 4.5 | Jan-Mar 1994 |
| 1994 | Oct 1960 | 4.5 | Jan-Mar 1995 |
| 1995 | Oct 1960 | 4.5 | Jan-Mar 1996 |
| 1996 | Oct 1960 | 4.5 | Jan-Mar 1997 |
| 1997 | Oct 1960 | 4.5 | Jan-Mar 1998 |
| 1998 | Oct 1960 | 4.5 | Jan-Mar 1999 |
| 1999 | Oct 1960 | 4.5 | Jan-Mar 2000 |
| 2000 | Oct 1960 | 4.5 | Jan-Mar 2001 |
| 2001 | Oct 1960 | 4.5 | Jan-Mar 2002 |
| 2002 | Oct 1960 | 4.5 | Jan-Mar 2003 |
| 2003 | Oct 1960 | 4.5 | Jan-Mar 2004 |
| 2004 | Oct 1960 | 4.5 | Jan-Mar 2005 |
| 2005 | Oct 1960 | 4.5 | Jan-Mar 2006 |
| 2006 | Oct 1960 | 4.5 | Jan-Mar 2007 |
| 2007 | Oct 1960 | 4.5 | Jan-Mar 2008 |
| 2008 | Oct 1960 | 4.5 | Jan-Mar 2009 |
| 2009 | Oct 1960 | 4.5 | Jan-Mar 2010 |
| 2010 | Oct 1960 | 4.5 | Jan-Mar 2011 |
| 2011 | Oct 1960 | 4.5 | Jan-Mar 2012 |
| 1980 | Nov 1960 | 4.5 | Feb-Apr 1981 |
| 1981 | Nov 1960 | 4.5 | Feb-Apr 1982 |
| 1982 | Nov 1960 | 4.5 | Feb-Apr 1983 |
| 1983 | Nov 1960 | 4.5 | Feb-Apr 1984 |
| 1984 | Nov 1960 | 4.5 | Feb-Apr 1985 |
| 1985 | Nov 1960 | 4.5 | Feb-Apr 1986 |
| 1986 | Nov 1960 | 4.5 | Feb-Apr 1987 |
| 1987 | Nov 1960 | 4.5 | Feb-Apr 1988 |
| 1988 | Nov 1960 | 4.5 | Feb-Apr 1989 |
| 1989 | Nov 1960 | 4.5 | Feb-Apr 1990 |
| 1990 | Nov 1960 | 4.5 | Feb-Apr 1991 |
| 1991 | Nov 1960 | 4.5 | Feb-Apr 1992 |
| 1992 | Nov 1960 | 4.5 | Feb-Apr 1993 |
| 1993 | Nov 1960 | 4.5 | Feb-Apr 1994 |
| 1994 | Nov 1960 | 4.5 | Feb-Apr 1995 |
| 1995 | Nov 1960 | 4.5 | Feb-Apr 1996 |
| 1996 | Nov 1960 | 4.5 | Feb-Apr 1997 |
| 1997 | Nov 1960 | 4.5 | Feb-Apr 1998 |
| 1998 | Nov 1960 | 4.5 | Feb-Apr 1999 |
| 1999 | Nov 1960 | 4.5 | Feb-Apr 2000 |
| 2000 | Nov 1960 | 4.5 | Feb-Apr 2001 |
| 2001 | Nov 1960 | 4.5 | Feb-Apr 2002 |
| 2002 | Nov 1960 | 4.5 | Feb-Apr 2003 |
| 2003 | Nov 1960 | 4.5 | Feb-Apr 2004 |
| 2004 | Nov 1960 | 4.5 | Feb-Apr 2005 |
| 2005 | Nov 1960 | 4.5 | Feb-Apr 2006 |
| 2006 | Nov 1960 | 4.5 | Feb-Apr 2007 |
| 2007 | Nov 1960 | 4.5 | Feb-Apr 2008 |
| 2008 | Nov 1960 | 4.5 | Feb-Apr 2009 |
| 2009 | Nov 1960 | 4.5 | Feb-Apr 2010 |
| 2010 | Nov 1960 | 4.5 | Feb-Apr 2011 |
| 2011 | Nov 1960 | 4.5 | Feb-Apr 2012 |