year mo    data_type region extent   area
1979  6      Goddard      S  14.74  11.13
1980  6      Goddard      S  13.24   9.48
1981  6      Goddard      S  13.92  10.07
1982  6      Goddard      S  13.99  10.41
1983  6      Goddard      S  13.35   9.67
1984  6      Goddard      S  13.94  10.55
1985  6      Goddard      S  13.99  10.42
1986  6      Goddard      S  13.31   9.62
1987  6      Goddard      S  13.31   9.80
1988  6      Goddard      S  13.60  10.19
1989  6      Goddard      S  14.17  10.73
1990  6      Goddard      S  13.75  10.26
1991  6      Goddard      S  13.52   9.87
1992  6      Goddard      S  13.34   9.90
1993  6      Goddard      S  13.61  10.28
1994  6      Goddard      S  14.13  10.63
1995  6      Goddard      S  13.84  10.37
1996  6      Goddard      S  14.38  11.00
1997  6      Goddard      S  13.67  10.12
1998  6      Goddard      S  13.98  10.25
1999  6      Goddard      S  14.22  10.74
2000  6      Goddard      S  14.41  10.95
2001  6      Goddard      S  13.91  10.47
2002  6      Goddard      S  12.94   9.60
2003  6      Goddard      S  14.48  11.07
2004  6      Goddard      S  14.36  10.80
2005  6      Goddard      S  13.94  10.20
2006  6      Goddard      S  13.98  10.49
2007  6      Goddard      S  13.87  10.39
2008  6      Goddard      S  14.52  11.31
2009  6      Goddard      S  14.41  11.01
2010  6      Goddard      S  15.00  11.56
2011  6      NRTSI-G      S  13.76  10.41

 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.