CSEMP assessment of fluoranthene in sediment at Hunterston (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 156.31 | 157.51 | -75.15 | 150.31 | |||
linear | 2 | 157.93 | 160.21 | -74.96 | 149.93 | 0.382 | 1 | 0.5365 |
smooth (df = 2) | 3 | 158.62 | 162.47 | -74.31 | 148.62 | 1.305 | 1 | 0.2533 |
smooth (df = 3) | 4 | 157.93 | 163.93 | -72.96 | 145.93 | 2.696 | 1 | 0.1006 |
smooth (df = 4) | 5 | 158.25 | 167.16 | -72.12 | 144.25 | 1.678 | 1 | 0.1952 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 5.383 | 5.568 | 0.18506 | 0.29869 | 0.620 | 0.5443 |
last 20 years | 2000 | 2018 | 5.383 | 5.568 | 0.18506 | 0.29869 | 0.620 | 0.5443 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 261.8 | 39.0 | -1.9042 | 0.1585 | -12.017 | 1.0000 |
ERL | 261.8 | 600.0 | 0.8292 | 0.1585 | 5.233 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
PAH (parent) data
PAH (parent) assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for pah_(parent) in sediment
- Accessment criteria for pah_(parent) in sediment
Media : Sediment (unsieved)
Station : Clyde_(Hunterston)_seSF, Hunterston (Clyde)
Determinand : Fluoranthene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Clyde_(Hunterston)_seSF, Hunterston (Clyde)
Determinand : Fluoranthene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020