CSEMP assessment of c3 naphthalenes 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 | 37.43 | 43.43 | -15.71 | 31.43 | |||
linear | 2 | 39.41 | 55.41 | -15.70 | 31.41 | 0.020 | 1 | 0.8867 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2017 | 5.737 | 5.831 | 0.0940 | 0.6585 | 0.143 | 0.8934 |
last 20 years | 2005 | 2017 | 5.737 | 5.831 | 0.0940 | 0.6585 | 0.143 | 0.8934 |
Status assessment
No assessment criteria
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (alkylated) data
PAH (alkylated) assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for pah_(alkylated) in sediment
- Accessment criteria for pah_(alkylated) in sediment
Media : Sediment (unsieved)
Station : Anglia_Essex_se02, Off Southend-on-sea (Thames)
Determinand : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Anglia_Essex_se02, Off Southend-on-sea (Thames)
Determinand : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020