CSEMP assessment of CB180 in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 36.66 | 41.16 | -15.33 | 30.66 | |||
linear | 2 | 38.49 | 49.16 | -15.25 | 30.49 | 0.169 | 1 | 0.6808 |
smooth (df = 2) | 3 | 40.16 | 65.16 | -15.08 | 30.16 | 0.339 | 1 | 0.5604 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2018 | -2.9743 | -3.1559 | -0.1816 | 0.4338 | -0.419 | 0.6929 |
last 20 years | 2005 | 2018 | -2.9743 | -3.1559 | -0.1816 | 0.4338 | -0.419 | 0.6929 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.043 | 0.100 | 0.853 | 0.238 | 3.584 | 0.0079 |
EAC | 0.043 | 12.000 | 5.641 | 0.238 | 23.692 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for chlorobiphenyls in sediment
- Accessment criteria for chlorobiphenyls in sediment
Media : Sediment (unsieved)
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : CB180
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : CB180
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020