Table B5
| Explanation of Data Designators T1T2A1A2ii CCCC |
| TABLE B5 Data type designator T2 (when T1 = E) |
| Instructions for the proper application of the level designators |
| T1 | T2 | T2 - Data Type |
| E | C | Cloud top temperature |
| E | F | Fog |
| E | I | Infrared |
| E | S | Surface temperature |
| E | V | Visible |
| E | W | Water vapour |
| E | Y | User specified |
| E | Z | Unspecified |