Dew-point and relative humidity can be obtained from the readings of the air temperature (dry-
bulb) and wet-bulb. If the wet-bulb reading is not available, dew-point and wet-bulb
temperature can be obtained from the readings of the air temperature and relative humidity (if
available)
NOTE (supplementary and auxiliary ships only)
- Supplementary and auxiliary
ships do not report the dew-point, wet-bulb temperature and
relative humidity