CSEMP assessment of fluoranthene in sediment at outer (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 133.02 | 134.31 | -63.51 | 127.02 | |||
linear | 2 | 127.43 | 129.90 | -59.72 | 119.43 | 7.588 | 1 | 0.0059 |
smooth (df = 2) | 3 | 115.44 | 119.61 | -52.72 | 105.44 | 13.991 | 1 | 0.0002 |
smooth (df = 3) | 4 | 117.40 | 123.94 | -52.70 | 105.40 | 0.046 | 1 | 0.8295 |
smooth (df = 4) | 5 | 118.88 | 128.68 | -52.44 | 104.88 | 0.515 | 1 | 0.4728 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2017 | 5.033 | 4.329 | -0.7039 | 0.1668 | -4.220 | 0.0009 |
last 20 years | 2000 | 2017 | 5.033 | 4.329 | -0.7039 | 0.1668 | -4.220 | 0.0009 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 75.9 | 39.0 | -0.6655 | 0.1410 | -4.721 | 0.9998 |
ERL | 75.9 | 600.0 | 2.0679 | 0.1410 | 14.670 | <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 : Firth_of_Clyde_(outer)_seSF, outer (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_(outer)_seSF, outer (Firth of Clyde)
Determinand : Fluoranthene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020