CSEMP assessment of c2 phenanthrenes 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 | 68.81 | 71.38 | -31.40 | 62.81 | |||
linear | 2 | 70.70 | 76.03 | -31.35 | 62.70 | 0.108 | 1 | 0.7426 |
smooth (df = 2) | 3 | 72.61 | 82.61 | -31.30 | 62.61 | 0.092 | 1 | 0.7614 |
smooth (df = 3) | 4 | 72.87 | 90.87 | -30.44 | 60.87 | 1.736 | 1 | 0.1876 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2005 | 2018 | 1.9094 | 2.0688 | 0.1594 | 0.4826 | 0.330 | 0.7496 |
last 20 years | 2005 | 2018 | 1.9094 | 2.0688 | 0.1594 | 0.4826 | 0.330 | 0.7496 |
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_se04 (Fladen Ground)
Determinand : C2 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se04 (Fladen Ground)
Determinand : C2 Phenanthrenes
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020