CSEMP assessment of c3 naphthalenes 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 | 72.34 | 74.92 | -33.17 | 66.34 | |||
linear | 2 | 71.63 | 76.96 | -31.81 | 63.63 | 2.718 | 1 | 0.0993 |
smooth (df = 2) | 3 | 73.48 | 83.48 | -31.74 | 63.48 | 0.146 | 1 | 0.7020 |
smooth (df = 3) | 4 | 74.42 | 92.42 | -31.21 | 62.42 | 1.064 | 1 | 0.3024 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2018 | 1.8531 | 2.7867 | 0.9336 | 0.5303 | 1.761 | 0.1163 |
last 20 years | 2005 | 2018 | 1.8531 | 2.7867 | 0.9336 | 0.5303 | 1.761 | 0.1163 |
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 : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020