CSEMP assessment of anthracene in sediment at Off Tyne
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 7.63 | 12.13 | -0.82 | 1.63 | |||
linear | 2 | 7.91 | 18.58 | 0.05 | -0.09 | 1.721 | 1 | 0.1896 |
smooth (df = 2) | 3 | 9.81 | 34.81 | 0.09 | -0.19 | 0.098 | 1 | 0.7546 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2017 | 4.355 | 4.026 | -0.3286 | 0.2357 | -1.394 | 0.2221 |
last 20 years | 2005 | 2017 | 4.355 | 4.026 | -0.3286 | 0.2357 | -1.394 | 0.2221 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 56.05 | 5.00 | -2.4167 | 0.1755 | -13.772 | 1.0000 |
ERL | 56.05 | 85.00 | 0.4165 | 0.1755 | 2.373 | 0.0318 |
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 : TyneTees_TTInter_se01 (Off Tyne)
Determinand : Anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : TyneTees_TTInter_se01 (Off Tyne)
Determinand : Anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020