;         01-Dec-2023 SUNSPOT.TXT REFERENCE TABLE
;
;Source: Circular of basic indices for ionospheric propagation
;http://www.itu.int/ITU-R/index.asp?category=study-groups&rlink=rsg3-indices&lang=en
;
;01-Dec-2023: Periodic update
;01-Nov-2016: The National Geophysical Data Center, Boulder, Colorado only refers to the information provided by the World Data Centre, SILSO (Brussels).
;01-Jul-2015: The World Data Centre SILSO started using a new re-calculated sunspot number series, which results in an increase in the scale of the new numbers.
;01-Jul-2011: Last confirmed value received from Boulder: JUL 2011. Following values from Boulder are extrapolated until Boulder resumes providing confirmed values.;
;
;--- -- ---
;YR  MO	SSN
;--- -- ---
1999 3  84
1999 4  85
1999 5  90
1999 6  93
1999 7  94
1999 8  98
1999 9  102
1999 10 108
1999 11 111
1999 12 111
2000 1  113
2000 2  117
2000 3  120
2000 4  121
2000 5  119
2000 6  119
2000 7  120
2000 8  119
2000 9  116
2000 10 115
2000 11 113
2000 12 112
2001 1  109
2001 2  104
2001 3  105
2001 4  108
2001 5  109
2001 6  110
2001 7  112
2001 8  114
2001 9  114
2001 10 114
2001 11 115
2001 12 115
2002 1  114
2002 2  115
2002 3  113
2002 4  111
2002 5  109
2002 6  106
2002 7  103
2002 8  99
2002 9  95
2002 10 91
2002 11 85
2002 12 82
2003 1  81
2003 2  79
2003 3  74
2003 4  70
2003 5  68
2003 6  65
2003 7  62
2003 8  60
2003 9  60
2003 10 58
2003 11 57
2003 12 55
2004 1  52
2004 2  49
2004 3  47
2004 4  46
2004 5  44
2004 6  42
2004 7  40
2004 8  38
2004 9  37
2004 10 36
2004 11 35
2004 12 34
2005 1  35
2005 2  34
2005 3  34
2005 4  32
2005 5  29
2005 6  29
2005 7  29
2005 8  27
2005 9  26
2005 10 25
2005 11 24
2005 12 23
2006 1  21
2006 2  19
2006 3  17
2006 4  17
2006 5  17
2006 6  16
2006 7  15
2006 8  16
2006 9  16
2006 10 14
2006 11 13
2006 12 12
2007 1  12
2007 2  12
2007 3  11
2007 4  10
2007 5  9
2007 6  8
2007 7  7
2007 8  6
2007 9  6
2007 10 6
2007 11 6
2007 12 6
2008 1  4
2008 2  4
2008 3  3
2008 4  3
2008 5  4
2008 6  3
2008 7  3
2008 8  3
2008 9  2
2008 10 2
2008 11 2
2008 12 2
2009 1  2
2009 2  2
2009 3  2
2009 4  2
2009 5  2
2009 6  3
2009 7  4
2009 8  5
2009 9  6
2009 10 7
2009 11 8
2009 12 9
2010 1  9
2010 2  11
2010 3  12
2010 4  14
2010 5  16
2010 6  16
2010 7  17
2010 8  17
2010 9  20
2010 10 23
2010 11 26
2010 12 29
2011 1  31
2011 2  33
2011 3  37
2011 4  42
2011 5  48
2011 6  53
2011 7  59
2011 8  59
2011 9  60
2011 10 61
2011 11 61
2011 12 63
2012 1  66
2012 2  67
2012 3  67
2012 4  65
2012 5  62
2012 6  59
2012 7  58
2012 8  58
2012 9  58
2012 10 59
2012 11 60
2012 12 60
2013 1  59
2013 2  58
2013 3  58
2013 4  58
2013 5  60
2013 6  63
2013 7  66
2013 8  69
2013 9  73
2013 10 75
2013 11 75
2013 12 76
2014 1  77
2014 2  78
2014 3  81
2014 4  82
2014 5  81
2014 6  80
2014 7  79
2014 8  76
2014 9  71
2014 10 67
2014 11 65
2014 12 78
2015 1  76
2015 2  74
2015 3  71
2015 4  69
2015 5  67
2015 6  64
2015 7  60
2015 8  58
2015 9  58
2015 10 56
2015 11 54
2015 12 52
2016 1  50
2016 2  48
2016 3  46
2016 4  43
2016 5  41
2016 6  39
2016 7  37
2016 8  35
2016 9  34
2016 10 32
2016 11 31
2016 12 29
2017 1  28
2017 2  28
2017 3  27
2017 4  26
2017 5  25
2017 6  24
2017 7  23
2017 8  21
2017 9  20
2017 10 19
2017 11 17
2017 12 17
2018 1  16
2018 2  15
2018 3  13
2018 4  8
2018 5  8
2018 6  7
2018 7  7
2018 8  7
2018 9  7
2018 10 7
2018 11 7
2018 12 6
2019 1  5
2019 2  5
2019 3  5
2019 4  4
2019 5  4
2019 6  4
2019 7  4
2019 8  4
2019 9  3
2019 10 3
2019 11 2
2019 12 2
2020 1  2
2020 2  3
2020 3  3
2020 4  4
2020 5  6
2020 6  8
2020 7  9
2020 8  9
2020 9  10
2020 10 12
2020 11 14
2020 12 15
2021 1  17
2021 2  19
2021 3  22
2021 4  25
2021 5  26
2021 6  28
2021 7  31
2021 8  35
2021 9  40
2021 10 45
2021 11 51
2021 12 56
2022 1  60
2022 2  65
2022 3  69
2022 4  73
2022 5  77
2022 6  81
2022 7  87
2022 8  92
2022 9  96
2022 10 99
2022 11 101
2022 12 107
2023 1  113
2023 2  118
2023 3  121
2023 4  123
2023 5  129
2023 6  126
2023 7  124
2023 8  127
2023 9  125
2023 10 129
2023 11 133
2023 12 138
2024 1  143
2024 2  147
2024 3  150
2024 4  152
2024 5  152
2024 6  151
2024 7  149
2024 8  146
2024 9  144
2024 10 141
2024 11 139
2024 12 136