CSEMP assessment of c2 phenanthrenes 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 | 59.78 | 61.42 | -26.89 | 53.78 | |||
linear | 2 | 49.96 | 53.16 | -20.98 | 41.96 | 11.819 | 1 | 0.0006 |
smooth (df = 2) | 3 | 43.86 | 49.42 | -16.93 | 33.86 | 8.100 | 1 | 0.0044 |
smooth (df = 3) | 4 | 45.21 | 54.21 | -16.60 | 33.21 | 0.653 | 1 | 0.4190 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 1999 | 2016 | 4.066 | 3.284 | -0.7822 | 0.3103 | -2.521 | 0.0284 |
last 20 years | 1999 | 2016 | 4.066 | 3.284 | -0.7822 | 0.3103 | -2.521 | 0.0284 |
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 : C2 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_TheMinchNorth_se02 (North Minch)
Determinand : C2 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020