CSEMP assessment of CB156 in sediment at Holy Loch (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 32.50 | 36.10 | -13.25 | 26.50 | |||
linear | 2 | 34.50 | 42.50 | -13.25 | 26.50 | 0.003 | 1 | 0.9532 |
smooth (df = 2) | 3 | 36.38 | 53.05 | -13.19 | 26.38 | 0.115 | 1 | 0.7345 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2008 | 2018 | -0.6603 | -0.7025 | -0.0421 | 0.7158 | -0.059 | 0.9550 |
last 20 years | 2008 | 2018 | -0.6603 | -0.7025 | -0.0421 | 0.7158 | -0.059 | 0.9550 |
Status assessment
No assessment criteria
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 : Clyde_FirthCInnerDunoon_se06, Holy Loch (Clyde)
Determinand : CB156
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Clyde_FirthCInnerDunoon_se06, Holy Loch (Clyde)
Determinand : CB156
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020