CSEMP assessment of c3 naphthalenes in sediment at North Minch
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 65.59 | 67.22 | -29.79 | 59.59 | |||
linear | 2 | 59.28 | 62.48 | -25.64 | 51.28 | 8.303 | 1 | 0.0040 |
smooth (df = 2) | 3 | 52.37 | 57.93 | -21.19 | 42.37 | 8.911 | 1 | 0.0028 |
smooth (df = 3) | 4 | 53.98 | 62.98 | -20.99 | 41.98 | 0.391 | 1 | 0.5317 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 1999 | 2016 | 4.326 | 3.617 | -0.7096 | 0.3468 | -2.046 | 0.0654 |
last 20 years | 1999 | 2016 | 4.326 | 3.617 | -0.7096 | 0.3468 | -2.046 | 0.0654 |
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 : MinchMalin_TheMinchNorth_se02 (North Minch)
Determinand : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_TheMinchNorth_se02 (North Minch)
Determinand : C3 Naphthalenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020