CSEMP assessment of benzo[a]anthracene 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 | 56.86 | 59.43 | -25.43 | 50.86 | |||
linear | 2 | 57.15 | 62.48 | -24.58 | 49.15 | 1.705 | 1 | 0.1916 |
smooth (df = 2) | 3 | 59.15 | 69.15 | -24.57 | 49.15 | 0.003 | 1 | 0.9586 |
smooth (df = 3) | 4 | 60.73 | 78.73 | -24.37 | 48.73 | 0.414 | 1 | 0.5198 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2018 | 1.1773 | 2.0431 | 0.8658 | 0.6354 | 1.363 | 0.2101 |
last 20 years | 2005 | 2018 | 1.1773 | 2.0431 | 0.8658 | 0.6354 | 1.363 | 0.2101 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 7.71 | 16.00 | 0.729 | 0.438 | 1.667 | 0.0670 |
ERL | 7.71 | 261.00 | 3.521 | 0.438 | 8.049 | <0.0001 |
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 : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : Benzo[a]anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : Benzo[a]anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020