CSEMP assessment of phenanthrene 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 | 112.00 | 113.38 | -53.00 | 106.00 | |||
linear | 2 | 113.99 | 116.66 | -53.00 | 105.99 | 0.009 | 1 | 0.9235 |
smooth (df = 2) | 3 | 114.42 | 118.97 | -52.21 | 104.42 | 1.570 | 1 | 0.2102 |
smooth (df = 3) | 4 | 116.10 | 123.30 | -52.05 | 104.10 | 0.321 | 1 | 0.5711 |
smooth (df = 4) | 5 | 118.09 | 128.98 | -52.05 | 104.09 | 0.007 | 1 | 0.9351 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 5.125 | 5.184 | 0.0584 | 0.6076 | 0.096 | 0.9248 |
last 20 years | 2000 | 2018 | 5.125 | 5.184 | 0.0584 | 0.6076 | 0.096 | 0.9248 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 178.33 | 32.00 | -1.7179 | 0.3100 | -5.542 | 1.0000 |
ERL | 178.33 | 240.00 | 0.2970 | 0.3100 | 0.958 | 0.1771 |
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 : Phenanthrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Forth_Estuary_seSF (Forth Estuary)
Determinand : Phenanthrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020