CSEMP assessment of phenanthrene in sediment at Off Southend-on-sea (Thames)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 51.01 | 57.01 | -22.51 | 45.01 | | | |
| linear | 2 | 52.62 | 68.62 | -22.31 | 44.62 | 0.394 | 1 | 0.5303 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2017 | 4.541 | 4.910 | 0.3689 | 0.5696 | 0.648 | 0.5525 |
| last 20 years | 2005 | 2017 | 4.541 | 4.910 | 0.3689 | 0.5696 | 0.648 | 0.5525 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 135.68 | 32.00 | -1.4445 | 0.4431 | -3.260 | 0.9845 |
| ERL | 135.68 | 240.00 | 0.5704 | 0.4431 | 1.287 | 0.1337 |
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (parent) data
da.jpg "PAH (parent) data for assessment of phenanthrene in sediment at Off Southend-on-sea (Thames)")
PAH (parent) assessment
as.jpg "PAH (parent) assessment of phenanthrene in sediment at Off Southend-on-sea (Thames)")
Related pages
