CSEMP assessment of BDE99 in sediment at inner (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 61.27 | 67.27 | -27.63 | 55.27 | |||
linear | 2 | 60.92 | 76.92 | -26.46 | 52.92 | 2.349 | 1 | 0.1254 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2009 | 2018 | -0.2947 | -0.9405 | -0.6457 | 0.3796 | -1.701 | 0.1641 |
last 20 years | 2009 | 2018 | -0.2947 | -0.9405 | -0.6457 | 0.3796 | -1.701 | 0.1641 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.3904 | 0.0500 | -2.0553 | 0.2224 | -9.240 | 0.9996 |
FEQG | 0.3904 | 1.0000 | 0.9405 | 0.2224 | 4.228 | 0.0067 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for organo-bromines in sediment
- Accessment criteria for organo-bromines in sediment
Media : Sediment (unsieved)
Station : Firth_of_Clyde_(inner)_seSF, inner (Firth of Clyde)
Determinand : BDE99
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Clyde_(inner)_seSF, inner (Firth of Clyde)
Determinand : BDE99
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020