CSEMP assessment of pyrene in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
| Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
|---|---|---|---|---|---|---|---|---|
| mean | 1 | 50.80 | 53.37 | -22.40 | 44.80 | |||
| linear | 2 | 51.64 | 56.97 | -21.82 | 43.64 | 1.168 | 1 | 0.2799 |
| smooth (df = 2) | 3 | 53.57 | 63.57 | -21.78 | 43.57 | 0.067 | 1 | 0.7952 |
| smooth (df = 3) | 4 | 55.29 | 73.29 | -21.64 | 43.29 | 0.282 | 1 | 0.5954 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2005 | 2018 | 1.6122 | 2.2020 | 0.5897 | 0.5299 | 1.113 | 0.2981 |
| last 20 years | 2005 | 2018 | 1.6122 | 2.2020 | 0.5897 | 0.5299 | 1.113 | 0.2981 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| BAC | 9 | 24 | 0.976 | 0.366 | 2.664 | 0.0143 |
| ERL | 9 | 665 | 4.298 | 0.366 | 11.729 | <0.0001 |
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 : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : Pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : Pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020