Cycle 23 Sunspot Number Prediction (October 2005) Year Mon 95% 50% 5% 1997 1 27.8 3.8 0.0 1997 2 28.4 4.4 0.0 1997 3 29.3 5.3 0.0 1997 4 30.5 6.5 0.0 1997 5 31.9 7.9 0.0 1997 6 33.7 9.7 0.0 1997 7 35.8 11.8 0.0 1997 8 38.1 14.1 0.0 1997 9 40.7 16.7 0.0 1997 10 43.6 19.6 0.0 1997 11 46.7 22.7 0.0 1997 12 50.1 26.1 2.1 1998 1 53.6 29.6 5.6 1998 2 57.3 33.3 9.3 1998 3 61.1 37.1 13.1 1998 4 65.0 41.0 17.0 1998 5 69.1 45.1 21.1 1998 6 73.2 49.2 25.2 1998 7 77.3 53.3 29.3 1998 8 81.5 57.5 33.5 1998 9 85.6 61.6 37.6 1998 10 89.7 65.7 41.7 1998 11 93.8 69.8 45.8 1998 12 97.8 73.8 49.8 1999 1 101.7 77.7 53.7 1999 2 105.5 81.5 57.5 1999 3 109.2 85.2 61.2 1999 4 112.8 88.8 64.8 1999 5 116.2 92.2 68.2 1999 6 119.5 95.5 71.5 1999 7 122.6 98.6 74.6 1999 8 125.6 101.6 77.6 1999 9 128.3 104.3 80.3 1999 10 130.9 106.9 82.9 1999 11 133.3 109.3 85.3 1999 12 135.5 111.5 87.5 2000 1 137.5 113.5 89.5 2000 2 139.4 115.4 91.4 2000 3 141.0 117.0 93.0 2000 4 142.4 118.4 94.4 2000 5 143.6 119.6 95.6 2000 6 144.6 120.6 96.6 2000 7 145.4 121.4 97.4 2000 8 146.0 122.0 98.0 2000 9 146.4 122.4 98.4 2000 10 146.7 122.7 98.7 2000 11 146.7 122.7 98.7 2000 12 146.5 122.5 98.5 2001 1 146.2 122.2 98.2 2001 2 145.7 121.7 97.7 2001 3 145.1 121.1 97.1 2001 4 144.2 120.2 96.2 2001 5 143.2 119.2 95.2 2001 6 142.1 118.1 94.1 2001 7 140.8 116.8 92.8 2001 8 139.4 115.4 91.4 2001 9 137.8 113.8 89.8 2001 10 136.1 112.1 88.1 2001 11 134.4 110.4 86.4 2001 12 132.5 108.5 84.5 2002 1 130.5 106.5 82.5 2002 2 128.4 104.4 80.4 2002 3 126.2 102.2 78.2 2002 4 123.9 99.9 75.9 2002 5 121.6 97.6 73.6 2002 6 119.2 95.2 71.2 2002 7 116.8 92.8 68.8 2002 8 114.3 90.3 66.3 2002 9 111.8 87.8 63.8 2002 10 109.3 85.3 61.3 2002 11 106.7 82.7 58.7 2002 12 104.1 80.1 56.1 2003 1 101.5 77.5 53.5 2003 2 98.9 74.9 50.9 2003 3 96.3 72.3 48.3 2003 4 93.7 69.7 45.7 2003 5 91.2 67.2 43.2 2003 6 88.6 64.6 40.6 2003 7 86.1 62.1 38.1 2003 8 83.6 59.6 35.6 2003 9 81.1 57.1 33.1 2003 10 78.7 54.7 30.7 2003 11 76.3 52.3 28.3 2003 12 74.0 50.0 26.0 2004 1 71.7 47.7 23.7 2004 2 69.5 45.5 21.5 2004 3 67.3 43.3 19.3 2004 4 65.2 41.2 17.2 2004 5 63.1 39.1 15.1 2004 6 61.1 37.1 13.1 2004 7 59.2 35.2 11.2 2004 8 57.3 33.3 9.3 2004 9 55.5 31.5 7.5 2004 10 53.7 29.7 5.7 2004 11 52.1 28.1 4.1 2004 12 50.5 26.5 2.5 2005 1 48.9 24.9 0.9 2005 2 47.4 23.4 0.0 2005 3 46.0 22.0 0.0 2005 4 44.6 20.6 0.0 2005 5 43.4 19.4 0.0 2005 6 42.1 18.1 0.0 2005 7 40.9 16.9 0.0 2005 8 39.8 15.8 0.0 2005 9 38.8 14.8 0.0 2005 10 37.8 13.8 0.0 2005 11 36.8 12.8 0.0 2005 12 35.9 11.9 0.0 2006 1 35.1 11.1 0.0 2006 2 34.3 10.3 0.0 2006 3 33.5 9.5 0.0 2006 4 32.8 8.8 0.0 2006 5 32.2 8.2 0.0 2006 6 31.7 7.7 0.0 2006 7 31.4 7.4 0.0 2006 8 31.2 7.2 0.0 2006 9 31.2 7.2 0.0 2006 10 31.5 7.5 0.0 2006 11 32.0 8.0 0.0 2006 12 32.8 8.8 0.0 2007 1 33.8 9.8 0.0 2007 2 35.1 11.1 0.0 2007 3 36.6 12.6 0.0 2007 4 38.5 14.5 0.0 2007 5 40.5 16.5 0.0 2007 6 42.8 18.8 0.0 2007 7 45.3 21.3 0.0 2007 8 48.0 24.0 0.0 2007 9 50.9 26.9 2.9 2007 10 53.9 29.9 5.9 2007 11 57.1 33.1 9.1 2007 12 60.3 36.3 12.3 2008 1 63.7 39.7 15.7 2008 2 67.1 43.1 19.1 2008 3 70.6 46.6 22.6 2008 4 74.1 50.1 26.1 2008 5 77.6 53.6 29.6 2008 6 81.1 57.1 33.1 2008 7 84.6 60.6 36.6 2008 8 88.0 64.0 40.0 2008 9 91.3 67.3 43.3 2008 10 94.6 70.6 46.6 2008 11 97.8 73.8 49.8 2008 12 100.9 76.9 52.9