CSEMP assessment of indeno[123-cd]pyrene in sediment at Forth Estuary
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 72.41 | 74.66 | -33.21 | 66.41 | |||
linear | 2 | 74.11 | 78.68 | -33.05 | 66.11 | 0.303 | 1 | 0.5819 |
smooth (df = 2) | 3 | 75.94 | 84.28 | -32.97 | 65.94 | 0.165 | 1 | 0.6848 |
smooth (df = 3) | 4 | 77.40 | 91.80 | -32.70 | 65.40 | 0.545 | 1 | 0.4604 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 5.312 | 4.906 | -0.4053 | 0.7313 | -0.554 | 0.5929 |
last 20 years | 2000 | 2018 | 5.312 | 4.906 | -0.4053 | 0.7313 | -0.554 | 0.5929 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 135.16 | 103.00 | -0.2717 | 0.4322 | -0.629 | 0.7274 |
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (parent) data
PAH (parent) assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for pah_(parent) in sediment
- Accessment criteria for pah_(parent) in sediment
Media : Sediment (unsieved)
Station : Forth_Estuary_seSF (Forth Estuary)
Determinand : Indeno[123-cd]pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Forth_Estuary_seSF (Forth Estuary)
Determinand : Indeno[123-cd]pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020