CSEMP assessment of benzo[a]anthracene 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 | 38.21 | 44.21 | -16.10 | 32.21 | |||
| linear | 2 | 40.17 | 56.17 | -16.09 | 32.17 | 0.038 | 1 | 0.8460 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2005 | 2018 | 4.059 | 4.192 | 0.1329 | 0.6833 | 0.194 | 0.8553 |
| last 20 years | 2005 | 2018 | 4.059 | 4.192 | 0.1329 | 0.6833 | 0.194 | 0.8553 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| BAC | 66.13 | 16.00 | -1.4190 | 0.5127 | -2.768 | 0.9748 |
| ERL | 66.13 | 261.00 | 1.3729 | 0.5127 | 2.678 | 0.0277 |
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 : Benzo[a]anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Forth_LowerForthEstuary_se02, Tancred (Forth)
Determinand : Benzo[a]anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020