NOTES: 1. This List was Originally Compiled by Peg Shea (sssrc@msn.com), formerly of the U.S. Air Force Research Labs (AFRL). 2. Updated 12 April 2005 by RP(?). We thank Marc Duldig, of the Australian Antarctic Division, for providing this table. GROUND LEVEL ENHANCEMENTS BASELINE BASELINE TIME EVENT # EVENT DATE DATE START - END (UT) _______ _________________ ________ __________________ 001 28 February 1942 420228 002 07 March 1942 420307 003 25 July 1946 460725 004 19 November 1949 491119 005 23 February 1956 560223 020000 - 030000 006 31 August 1956 560831 110000 - 120000 007 17 July 1959 590716 220000 - 240000 (-1) 008 04 May 1960 600504 090000 - 100000 009 03 September 1960 600902 230000 - 240000 (-1) 010 12 November 1960 601112 120000 - 130000 011 15 November 1960 601115 010000 - 020000 012 20 November 1960 601120 190000 - 200000 013 18 July 1961 610718 090000 - 100000 014 20 July 1961 610720 150000 - 160000 015 07 July 1966 660706 230000 - 240000 (-1) 016 28 January 1967 670128 010000 - 020000 017 28 January 1967 670128 060000 - 070000 018 29 September 1968 680929 150000 - 160000 019 18 November 1968 681118 090000 - 100000 020 25 February 1969 690225 080000 - 090000 021 30 March 1969 690330 020000 - 030000 022 24 January 1971 710124 220000 - 230000 023 01 September 1971 710901 180000 - 190000 024 04 August 1972 720804 110000 - 120000 025 07 August 1972 720807 140000 - 150000 026 29 April 1973 730429 200000 - 210000 027 30 April 1976 760430 200000 - 210000 028 19 September 1977 770919 090000 - 100000 029 24 September 1977 770924 050000 - 060000 030 22 November 1977 771122 090000 - 100000 031 07 May 1978 780507 020000 - 030000 032 23 September 1978 780923 090000 - 100000 033 21 August 1979 790821 050000 - 060000 034 10 April 1981 810410 150000 - 160000 035 10 May 1981 810510 060000 - 070000 036 12 October 1981 811012 050000 - 060000 037 26 November 1982 821126 020000 - 030000 038 07 December 1982 821207 220000 - 230000 039 16 February 1984 840216 080000 - 090000 040 25 July 1989 890725 070000 - 080000 041 16 August 1989 890815 230000 - 240000 (-1) 042 29 September 1989 890929 100000 - 110000 043 19 October 1989 891019 110000 - 120000 044 22 October 1989 891022 160000 - 170000 045 24 October 1989 891024 160000 - 170000 046 15 November 1989 891115 050000 - 060000 047 21 May 1990 900521 210000 - 220000 048 24 May 1990 900524 190000 - 200000 049 26 May 1990 900526 190000 - 200000 050 28 May 1990 900528 030000 - 040000 051 11 June 1991 910611 000000 - 010000 052 15 June 1991 910615 070000 - 080000 053 25 June 1992 920625 180000 - 190000 054 02 November 1992 921102 020000 - 030000 055 06 November 1997 971106 110000 - 120000 056 02 May 1998 980502 110000 - 120000 057 06 May 1998 980506 070000 - 080000 058 24 August 1998 980824 190000 - 200000 059 14 July 2000 000714 090000 - 100000 060 15 April 2001 010415 110000 - 120000 061 18 April 2001 010418 010000 - 020000 062 04 November 2001 011104 150000 - 160000 063 26 December 2001 011226 040000 - 050000 064 24 August 2002 020824 010000 - 020000 065 28 October 2003 031028 100000 - 110000 066 29 October 2003 031029 190000 - 200000 067 02 November 2003 031102 160000 - 170000 068 17 January 2005 050117 090000 - 100000 Very small, max increase at S. Pole (2%) 069 20 January 2005 050120 053000 - 063000 First increase seen by S. Pole @0649 UT 070 13 December 2006 061213 010000 - 020000 071 17 May 2012 ADDITIONAL NOTE: 1. The following neutron monitor data site list is provided by Louise Gentile of the Air Force Research Laboratory (AFRL/RVBXP). Some links have GLE data specifically for the GLE events whereas others have hourly neutron monitor data. Apatity: http://pgi.kolasc.net.ru/CosmicRay/ Bartol Institute: http://www.bartol.udel.edu/~neutronm/ Izmiran: http://helios.izmiran.troitsk.ru/ Jungfraujoch: http://kspc4.unibe.ch/nm Lomnicky Stit: http://lsuef1.ta3.sk/ Meudon: http://www.dasop.obspm.fr/previ/cosmiques/cosmiques.htm Mexico: http://www.igeofcu.unam.mx/geofisica.html NGDC: http://spidr.ngdc.noaa.gov Norilsk: http://cr10.izmiran.rssi.ru/norilsk/start.htm Oulu: http://cupp.oulu.fi/ilya/ Rome: http://www.fis.uniroma3.it/~svirco/index.html South Africa: http://www.puk.ac.za/physics/data/ University of Chicago: http://ulysses.uchicago.edu/NeutronMonitor/neutron.html WDC-C2 for Cosmic Rays: http://www.env.sci.ibaraki.ac.jp/database/html/WDCCR/index.html