Index of ftp://ftp.ngdc.noaa.gov/STP/SOLAR_DATA/SATELLITE_ENVIRONMENT/ELECTRONS
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![[DIR]](/icons/folder.gif) 1987 | 3.00b | August 14 2008 |
| 1988 | 3.00b | August 14 2008 |
| 1989 | 3.00b | August 14 2008 |
| 1990 | 3.00b | August 14 2008 |
| 1991 | 3.00b | August 14 2008 |
| 1992 | 3.00b | August 14 2008 |
| 1993 | 3.00b | August 14 2008 |
| 1994 | 3.00b | August 14 2008 |
| 1995 | 3.00b | August 14 2008 |
| 1996 | 3.00b | August 14 2008 |
| 1997 | 3.00b | August 14 2008 |
| 1998 | 3.00b | August 14 2008 |
| 1999 | 3.00b | August 14 2008 |
| 2000 | 3.00b | August 14 2008 |
| 2001 | 3.00b | August 14 2008 |
| 2002 | 3.00b | August 14 2008 |
| 2003 | 3.00b | August 14 2008 |
| 2004 | 3.00b | August 14 2008 |
| 2005 | 3.00b | August 14 2008 |
| 2006 | 3.00b | August 14 2008 |
| 2007 | 5.00b | January 31 2012 |
| 2008 | 5.00b | January 31 2012 |
| 2009 | 5.00b | January 31 2012 |
| 2010 | 5.00b | January 31 2012 |
| 2011 | 4.00b | September 18 2012 |
| 2012 | 4.00b | January 23 2013 |
| 2013 | 4.00b | July 28 2013 |
| docs | 5.00b | October 1 2008 |