CSEMP assessment of anthracene in sediment at Lough Foyle
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 128.73 | 130.98 | -61.37 | 122.73 | |||
linear | 2 | 125.12 | 129.69 | -58.56 | 117.12 | 5.615 | 1 | 0.0178 |
smooth (df = 2) | 3 | 125.79 | 134.13 | -57.90 | 115.79 | 1.322 | 1 | 0.2503 |
smooth (df = 3) | 4 | 127.59 | 141.99 | -57.80 | 115.59 | 0.202 | 1 | 0.6534 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 2.9413 | 1.3224 | -1.6189 | 0.5919 | -2.735 | 0.0230 |
last 20 years | 2000 | 2018 | 2.9413 | 1.3224 | -1.6189 | 0.5919 | -2.735 | 0.0230 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 3.75 | 5.00 | 0.2870 | 0.3156 | 0.909 | 0.1934 |
ERL | 3.75 | 85.00 | 3.1202 | 0.3156 | 9.888 | <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 : MinchMalin_FoyleFaughanE_se01 (Lough Foyle)
Determinand : Anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_FoyleFaughanE_se01 (Lough Foyle)
Determinand : Anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020