This dataset contains the in-situ monitoring data used for calculating eutrophication indicator results for following indicators:

Chlorophyll-a 2018

Dissolved inorganic nitrogen 2018

Dissolved inorganic phosphorus 2018

Total nitrogen 2018

Total phosphorus 2018

Water clarity 2018

This dataset is extraction for 2011-2016 assessment period from HELCOM COMBINE database, which contains all HELCOM oceanographic monitoring data. Full COMBINE database can be accessed from dedicated web page

Attribute information:

"Cruise": Platform code of the monitoring cruise, which can be queried from http://vocab.ices.dk/

"Station": Station number

"Year": Year of sampling event

"Month": Month of sampling event

"Day": Day of sampling event

"Hour": Hour of sampling event

"Minute": Minute of sampling event

"Latitude": Latitude coordinate of the sampling location (WGS84 decimal degrees)

"Longitude": Longitude coordinate of the sampling location (WGS84 decimal degrees)

"BotDepth": Bottom depth (m) of sampling location

"Secchi": Secchi depth at sampling location

"StationNam": Station name from ICES Station dictionary

"Assessment" = HELCOM assessment unit ID

"Depth": Sampling depth (m)

"Temperature": Temperature (ºC)

"Salinity": Salinity

"Oxygen": Oxygen (ml/l)

"Phosphate": Phosphate (umol/l)

"TotalPhos": Total phosphorus (umol/l)

"Silicate": Silicate (umol/l)

"Nitrate": Nitrate (umol/l)

"Nitrite": Nitrite (umol/l)

"Ammonium": Ammonium (umol/l)

"TotalNitr": Total nitrogen (umol/l)

"HydrogenS": Hydrogen sulphide (umol/l)

"pH": pH

"Alkalinity": Alkalinity (mEq/l)

"Chlorophyl": Chlorophyll-a (ug/l)