Contains tables and equations for the determination of relative humidity and dew point from the readings of a forced-ventilated wet- and dry-bulb hygrometer or aspirated psychrometer over the range of dry-bulb temperatures from 1C to 99C at 1013 hPa.
BS 4833:1986 history
2009BS 1339-2:2009 Humidity - Humidity calculation and tables - User Guide
1986BS 4833:1986 Schedule for hygrometric tables for use in the testing and operation of environmental enclosures