WMO>WWW >WWW Operational Information Service (OIS)> Telecommunications Abbreviated Heading - TAAii CCCC   Explanation of Data Designators T1T2A1A2ii CCCC TABLE C5 Reference time designator A2 (when T1 = Q or Y) Instructions for the proper application of the level designators   T1 A2 A2 - Reference Time Designator Q, X or Y A Analysis (00 hour) Q, X or Y B 3 hours forecast Q, X or Y C 6 hours forecast Q, X or Y D 9 hours forecast Q, X or Y E 12 hours forecast Q, X or Y F 15 hours forecast Q, X or Y G 18 hours forecast Q, X or Y H 21 hours forecast Q, X or Y I 24 hours forecast Q, X or Y J 27 hours forecast Q, X or Y K 30 hours forecast Q, X or Y L 33 hours forecast Q, X or Y M 36 hours forecast Q, X or Y N 39 hours forecast Q, X or Y O 42 hours forecast Q, X or Y P 45 hours forecast Q, X or Y Q 48 hours forecast

WORLD WEATHER WATCH CBS Meetings Reports of Meetings OPERATIONAL INFORMATION SERVICE Telecommunications Abbreaviated Heading TTAAii CCCC Symbolic Structure explained Table Definitions Table A Table B1 Table B2 Table B3 Table B4 Table B5 Table B6 Table B7 Table C1 Table C2 Table C3 Table C4 Table C5 Table C6 Table C7 Table D1 Table D2 Table D3 Indicator BBB CONTACT US...

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