Zero/negative values code

Description:

Keyword declaring whether zero and negative values may occur in the data section. The following key words are allowed:
  • zero possible
  • zero/negative possible
  • zero/negative impossible

Syntax:

Zero/negative values code:    <zero / neg. values keyword>

Example:

Zero/negative values code:    zero/negative possible

 

Explanation for zero and negative values

Description:

Short statement why 0 or negative values may or may not occur.

Syntax:

Zero/negative values:         <freetext keywords explaining zero / neg. values>

Example:

Zero/negative values:         Zero and neg. values may appear due to statistical variations at very low concentrations


This service has been funded or supported by the Norwegian Institute for Air Research (NILU), the EU research infrastructure ACTRIS (Aerosols, Clouds, and Trace gases Research InfraStructure), the European Monitoring and Evaluation Programme (EMEP).