CSEMP assessment of c2 naphthalenes in sediment at Solway Firth
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 129.27 | 130.65 | -61.64 | 123.27 | |||
linear | 2 | 131.20 | 133.87 | -61.60 | 123.20 | 0.067 | 1 | 0.7964 |
smooth (df = 2) | 3 | 123.17 | 127.72 | -56.59 | 113.17 | 10.034 | 1 | 0.0015 |
smooth (df = 3) | 4 | 125.17 | 132.37 | -56.58 | 113.17 | 0.000 | 1 | 0.9854 |
smooth (df = 4) | 5 | 125.34 | 136.23 | -55.67 | 111.34 | 1.833 | 1 | 0.1758 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2001 | 2018 | 6.174 | 6.279 | 0.10538 | 0.20166 | 0.523 | 0.6101 |
last 20 years | 2001 | 2018 | 6.174 | 6.279 | 0.10538 | 0.20166 | 0.523 | 0.6101 |
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 : Solway_Firth_seSF (Solway Firth)
Determinand : C2 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Solway_Firth_seSF (Solway Firth)
Determinand : C2 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020