In cases where the data should be extracted if certain conditions (qualities) apply, i.e. the status-flag indicates a properly working instrument, or the sea-surface-temperature is above 300K, the MetNoFimex::CDMQualityExtractor allows to add these rules. The cdmQualityConfig.xml file as shown above gives an example of such an configuration.
all
select all valid values (within valid_max, valid_min or valid_range, without _FillValue) highest
the highest numerical value found in the data-slice which is valid lowest
the lowest numerical value fond in the data-slice which is valid max:xxx.x
all valid-values below or equal xxx.x min:xxx.x
all valid values above or equal xxx.x