CSEMP assessment of anthracene in sediment at inner (Firth of Forth)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 98.49 | 100.29 | -46.25 | 92.49 | |||
linear | 2 | 99.59 | 103.15 | -45.80 | 91.59 | 0.898 | 1 | 0.3434 |
smooth (df = 2) | 3 | 90.97 | 97.22 | -40.49 | 80.97 | 10.622 | 1 | 0.0011 |
smooth (df = 3) | 4 | 92.25 | 102.54 | -40.12 | 80.25 | 0.720 | 1 | 0.3960 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 3.298 | 2.871 | -0.4274 | 0.3279 | -1.304 | 0.2216 |
last 20 years | 2000 | 2018 | 3.298 | 2.871 | -0.4274 | 0.3279 | -1.304 | 0.2216 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 17.65 | 5.00 | -1.2616 | 0.2437 | -5.177 | 0.9998 |
ERL | 17.65 | 85.00 | 1.5717 | 0.2437 | 6.450 | <0.0001 |
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 : Firth_of_Forth_(inner)_seSF, inner (Firth of Forth)
Determinand : Anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Forth_(inner)_seSF, inner (Firth of Forth)
Determinand : Anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020