CSEMP assessment of anthracene in sediment at Bann Estuary
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 270.27 | 272.07 | -132.13 | 264.27 | |||
linear | 2 | 272.26 | 275.81 | -132.13 | 264.26 | 0.009 | 1 | 0.9256 |
smooth (df = 2) | 3 | 274.05 | 280.30 | -132.03 | 264.05 | 0.207 | 1 | 0.6488 |
smooth (df = 3) | 4 | 273.81 | 284.10 | -130.91 | 261.81 | 2.237 | 1 | 0.1347 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2000 | 2018 | 3.410 | 3.257 | -0.1524 | 1.0770 | -0.142 | 0.8900 |
last 20 years | 2000 | 2018 | 3.410 | 3.257 | -0.1524 | 1.0770 | -0.142 | 0.8900 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 25.97 | 5.00 | -1.6476 | 0.4190 | -3.932 | 0.9988 |
ERL | 25.97 | 85.00 | 1.1856 | 0.4190 | 2.829 | 0.0082 |
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_BannEstuary_se01 (Bann Estuary)
Determinand : Anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020
Station : MinchMalin_BannEstuary_se01 (Bann Estuary)
Determinand : Anthracene
Units : μg kg-1 dry weight normalised to 2.5% organic carbon
Data extraction : 30 April 2020