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Waterbase-Rivers: Quality

The Quality table contains data on nutrients and organic matter in water measured at Eionet-Water river monitoring stations. Each station has been assigned a unique Waterbase identifier (WaterbaseID) which can be used to link the Quality data with their respective Stations and Pressures data. Each record has two special quality assurance fields. They are explained in QA documentation which can be found in "Additional information" part.
Category
European data
Records
596767
Table definition
NumberOfSamples Number of samples number of samples in aggregation period. smallint(2) 0
Year Year year of aggregation period (aggregated data sets), or year in which sample taken (disaggregated data sets), in format YYYY. Year should be no later than that requested in the last Eionet-Water data request. int(4) -1
PeriodLength Period length number of months in aggregation period. int(4) 0
QA_outlier Quality assurance field - outlier flag mean value is an outlier for current station and determinand time series: 1=yes, 0=no. bit(1) 0
LimitofDetection Limit of detection concentration for which there is a desirably small probability (around 5%) that the determinand will not be detected, i.e. there is a 95% probability that the determinand will be detected. numeric(9) 0
LimitofDetermination Limit of determination the smallest concentration that can be distinguished from the analytical blank at a chosen level of statistical confidence (usually 95%). numeric(9) 0
Mean Mean mean concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination. numeric(9) 0
Minimum Minimum minimum concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination. numeric(9) 0
Maximum Maximum maximum concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination. numeric(9) 0
Median Median median concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination. numeric(9) 0
StandardDeviation Standard deviation standard deviation of concentration values of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination. numeric(9) 0
10percentile 10th percentile 10th percentile concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination. numeric(9) 0
90percentile 90th percentile 90th percentile concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination. numeric(9) 0
CountryCode Country code abbreviation of EEA Member or Collaborating country. ISO 3166-alpha-2 code elements. nvarchar(2) 0
WaterbaseId Waterbase ID internally produced, unique identifier used to represent the monitoring station for rivers, lakes, transitional, coastal and marine waters, and water quantity, in the format CountryCode_WaterDataSet_NationalStationID (e.g. AT_RV_001), or the groundwater body, in the format CountryCode_WaterDataSet_EWN-Code (e.g. AT_GW_AT001). nvarchar(50) -1
Determinand Determinand determinand name. nvarchar(50) -1
Unit Unit unit of measurement. nvarchar(20) 0
AggregationPeriod Aggregation period period of aggregation: Annual=aggregated over whole year, Summer=aggregated over summer months, Winter=aggregated over winter months, MMYYYY-MMYYYY or YYYY-YYYY=aggregated between two periods (TCM only). nvarchar(20) -1
Remarks Remarks remarks, comments or explanatory notes. nvarchar(255) 0
QA_LRviolations Quality assurance field - numerical list of logical rules violated in record tested logical rules are explanained in QA documentation. nvarchar(100) 0
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European Environment Agency (EEA)
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1050 Copenhagen K
Denmark
Phone: +45 3336 7100