CSEMP assessment of phenanthrene in sediment at Tancred (Forth)
Statistical analysis
Trend assessment
Analysis of variance
| Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
|---|---|---|---|---|---|---|---|---|
| mean | 1 | 39.94 | 45.94 | -16.97 | 33.94 | |||
| linear | 2 | 41.69 | 57.69 | -16.84 | 33.69 | 0.254 | 1 | 0.6142 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2005 | 2018 | 4.451 | 4.774 | 0.3226 | 0.6177 | 0.522 | 0.6291 |
| last 20 years | 2005 | 2018 | 4.451 | 4.774 | 0.3226 | 0.6177 | 0.522 | 0.6291 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| BAC | 118.36 | 32.00 | -1.3080 | 0.4737 | -2.761 | 0.9746 |
| ERL | 118.36 | 240.00 | 0.7069 | 0.4737 | 1.492 | 0.1049 |
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for in sediment
- Accessment criteria for in sediment
Media : Sediment (unsieved)
Station : Forth_LowerForthEstuary_se02, Tancred (Forth)
Determinand : Phenanthrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Forth_LowerForthEstuary_se02, Tancred (Forth)
Determinand : Phenanthrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020