AHL - Table Definitions Activity Areas (1) Global Telecommunication System (GTS) Explanation of Data Designators T1T2A1A2ii CCCC TABLE DEFINITIONS Tables Data Type Table A Data type designator T1 Matrix Table for T1T2A1A2ii definitions Table B1 Data type designator T2 (when T1 = A, C, F, N, S, T, U or W) Table B2 Data type designator T2 (when T1 = D, G, H, P, Q, V or Y) Table B3 Data type designator T2 (when T1 = I or J) Table B4 Data type designator T2 (when T1 = O) Table B5 Data type designator T2 (when T1 = E) Table B6 Data type designator T2 (when T1 = K) Table B7 Data type designator T2 (when T1 = L) Table C1 Geographical designators A1A2 for use in abbreviated headings T1T2A1A2ii CCCC YYGGgg for bulletins containing meteorological information, excluding ships’ weather reports and oceanographic data Table C2 Geographical designators A1A2 for use in abbreviated headings T1T2A1A2ii CCCC YYGGgg for bulletins containing ships’ weather reports and oceanographic data including reports from automatic marine stations Table C3 Geographical area designator A1 (when T1 = D, G, H, O, P, Q, T or Y) and geographical area designator A2 (when T1 = I or K) Table C4 Reference time designator A2 (when T1 = D, G, H, J, O, P, or T) Table C5 Reference time designator A2 (when T1 = Q or Y)) Table C6 Data type designator A1 (when T1 = I or J) Table C7 Data type designator A1 (when T1 = K) Table D1 Level designator ii (when T1 = O) Table D2 Level designator ii (when T1 = D, G, H, P, Q or Y) Table D3 Level designator ii (when T1 T2 = FA or UA)