This dataset represents the underlying data on core indicator Hexabromocyclododecane (HBCDD). The core indicator evaluates the status of the marine environment based on concentrations of hexabromocyclododecane (HBCDD) in Baltic Sea fish. Quantitative threshold values are used to evaluate if core indicators status is Good, Not good or Not assessed. The threshold value is an environmental quality standard (EQS), derived at EU level as a substance included on the priority list under Directive 2008/105/EC.

This dataset displays the result of the indicator in HELCOM Assessment Scale 4 (Division of the Baltic Sea into 17 sub-basins and further division into coastal and off-shore areas and division of the coastal areas by WFD water types or water bodies).

Attribute information:

Attributes:

region = MIME subregion

country = country

station = Unique text that identifies the station

stationNam = name for the station

latitude = latitude coordinate of station

longitude = longitude coordinate of station

determinand = determinand

detGroup = the grouping of determinands used to display the results

species = species of measurment

shape = shape used to map assessment results

colour = colour used to map assessment results

l4area = Helcom assessment unit

MSTAT = Type of monitoring station

WLTYP = Water and Land Station Type

fileGroup = used to find the url of the graphs associated with the timeseries

fileSuffix = used to find the url of the graphs associated with the timeseries

filePrefix = used to find the url of the graphs associated with the timeseries

nyall = total number of years of data

nyfit = number of years of data used in the assessment

nypos = number of years with at least one measurement above the limit of detection

lastyear = most recent year of data

pnonlin = the significance of the nonlinear component of the trend (if fitted)

pltrend = the significance of the linear component of the trend (if fitted)

ltrend = annual ‘linear’ change over the whole time series; for contaminants, this is the annual change in log-concentration multiplied by 100, which is approximately the annual percentage change in concentration

prtrend = the significance of the change over the most recent 20 years; for the assessment conducted in November 2016 and published in June 2017, this is the period 1996-2015.

rtrend = annual ‘linear’ change over the most recent 20 years

dtrend = for contaminants, (approximately) the annual percentage change in concentration that will be detected with 90% power with ten years of annual monitoring

meanLY = fitted value in last monitoring year

clLY = upper one-sided 95% confidence limit on fitted value in last monitoring year

HQS = Threshold value

HQSdiff = difference between clLY and HQS

HQSachieve = the year when the mean value is projected to be below the HQS, given current trends (with 3000 indicating it is a very long way off!)

HQSbelow = whether the mean value in the last monitoring year is significantly below HQS

class = imposex class