the columns is logical, the field name is mon_1,Mon_2 ans so on.
each row have a year number to show the year belong.

the following statement i tryed but dose not works:-

SELECT [year],
NULLIF(CHARINDEX('F', CAST(mon_1 AS CHAR(1)) + CAST(mon_2 AS CHAR(1)) + CAST(mon_3 AS CHAR(1)) + CAST(mon_4 AS CHAR(1)) + CAST(mon_5 AS CHAR(1)) + CAST(mon_6 AS CHAR(1)) + CAST(mon_7 AS CHAR(1)) + CAST(mon_8 AS CHAR(1)) + CAST(mon_9 AS CHAR(1)) + CAST(mon_10 AS CHAR(1)) + CAST(mon_11 AS CHAR(1)) + CAST(mon_12 AS CHAR(1))) - 1, -1)
FROM mumonth

the result i get as follows

2004 null
2005 null
2006 null
2007 null