year mo    data_type region extent   area
1979 10      Goddard      S  18.03  13.62
1980 10      Goddard      S  18.90  14.48
1981 10      Goddard      S  18.54  14.33
1982 10      Goddard      S  18.00  13.64
1983 10      Goddard      S  18.11  13.83
1984 10      Goddard      S  17.75  13.64
1985 10      Goddard      S  18.42  14.28
1986 10      Goddard      S  17.61  13.22
1987 10      Goddard      S  18.01  13.59
1988 10      Goddard      S  18.60  14.32
1989 10      Goddard      S  18.03  13.77
1990 10      Goddard      S  18.18  13.71
1991 10      Goddard      S  18.20  13.70
1992 10      Goddard      S  18.22  13.76
1993 10      Goddard      S  18.38  14.09
1994 10      Goddard      S  18.26  13.98
1995 10      Goddard      S  18.30  13.47
1996 10      Goddard      S  18.17  13.85
1997 10      Goddard      S  18.14  14.01
1998 10      Goddard      S  18.82  14.45
1999 10      Goddard      S  18.73  14.13
2000 10      Goddard      S  18.46  14.16
2001 10      Goddard      S  18.08  13.24
2002 10      Goddard      S  18.17  13.73
2003 10      Goddard      S  18.37  13.78
2004 10      Goddard      S  18.57  14.03
2005 10      Goddard      S  18.70  13.92
2006 10      Goddard      S  18.99  14.58
2007 10      Goddard      S  18.68  14.50
2008 10      Goddard      S  18.08  14.04
2009 10      Goddard      S  18.60  14.26
2010 10      Goddard      S  18.83  14.33
2011 10      NRTSI-G      S  18.48  14.02

 Important Note: 

 When insufficient satellite data is available to process the area and extent
 values, the data is flagged as -9999. For more information see Processing
 Steps, Monthly Mean Ice Concentration in the documentation -
 http://nsidc.org/data/docs/noaa/g02135_seaice_index/index.html#processingstep.