MANOBS Manual of Surface Weather Observations: record of amendments

Table listing the amendments to the seventh edition of MANOBS
Amendment Number Effective Date Entered By
1 to 10 1977 to 1989 Amendment 11 printing
11 January 1992 Amendment 11 printing
12 June 1992 Amendment 12 printing
13 October 1994 Amendment 13 printing
14 June 1996 Amendment 14 printing
15 April 1996 Amendment 15 printing
16 September 26, 2008 Amendment 16 printing
17 January, 2011 Amendment 17 printing
18 January, 2013 Amendment 18 printing
19 April, 2015 Included in this printing
19(a) May, 2016 Addendum to Amendment 19
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