CSEMP assessment of c1 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 | 59.15 | 60.79 | -26.58 | 53.15 | |||
linear | 2 | 48.63 | 51.83 | -20.32 | 40.63 | 12.525 | 1 | 0.0004 |
smooth (df = 2) | 3 | 41.25 | 46.81 | -15.63 | 31.25 | 9.379 | 1 | 0.0022 |
smooth (df = 3) | 4 | 40.00 | 49.00 | -14.00 | 28.00 | 3.253 | 1 | 0.0713 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 1999 | 2016 | 4.366 | 3.690 | -0.6762 | 0.3049 | -2.218 | 0.0485 |
last 20 years | 1999 | 2016 | 4.366 | 3.690 | -0.6762 | 0.3049 | -2.218 | 0.0485 |
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 : C1 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 : C1 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020