CSEMP assessment of indeno[123-cd]pyrene 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 | 37.44 | 43.44 | -15.72 | 31.44 | |||
linear | 2 | 37.58 | 53.58 | -14.79 | 29.58 | 1.856 | 1 | 0.1731 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2017 | 4.341 | 4.894 | 0.5529 | 0.3871 | 1.428 | 0.2264 |
last 20 years | 2005 | 2017 | 4.341 | 4.894 | 0.5529 | 0.3871 | 1.428 | 0.2264 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 133.49 | 103.00 | -0.25930 | 0.30502 | -0.850 | 0.7784 |
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 : Anglia_Essex_se02, Off Southend-on-sea (Thames)
Determinand : Indeno[123-cd]pyrene
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 : Indeno[123-cd]pyrene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020