CSEMP assessment of fluoranthene in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 107.24 | 109.04 | -50.62 | 101.24 | |||
linear | 2 | 109.17 | 112.73 | -50.58 | 101.17 | 0.067 | 1 | 0.7963 |
smooth (df = 2) | 3 | 103.55 | 109.80 | -46.78 | 93.55 | 7.618 | 1 | 0.0058 |
smooth (df = 3) | 4 | 103.19 | 113.47 | -45.59 | 91.19 | 2.364 | 1 | 0.1242 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2006 | 2018 | 4.868 | 4.929 | 0.06127 | 0.22970 | 0.267 | 0.7946 |
last 20 years | 2006 | 2018 | 4.868 | 4.929 | 0.06127 | 0.22970 | 0.267 | 0.7946 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 138.3 | 39.0 | -1.2658 | 0.1234 | -10.257 | 1.0000 |
ERL | 138.3 | 600.0 | 1.4676 | 0.1234 | 11.892 | <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 (< 63 micron fraction)
Station : Firth_of_Clyde_(middle)_seSF, middle (Firth of Clyde)
Determinand : Fluoranthene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : Firth_of_Clyde_(middle)_seSF, middle (Firth of Clyde)
Determinand : Fluoranthene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020