CSEMP assessment of arsenic in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) | |
---|---|---|---|---|---|---|---|---|
mean | 1 | 24.06 | 27.66 | -9.03 | 18.06 | |||
linear | 2 | 26.06 | 34.06 | -9.03 | 18.06 | 0.007 | 1 | 0.9353 |
smooth (df = 2) | 3 | 24.13 | 40.79 | -7.06 | 14.13 | 3.929 | 1 | 0.0475 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2006 | 2013 | 1.4576 | 1.4809 | 0.02336 | 0.28735 | 0.081 | 0.9378 |
last 20 years | 2006 | 2013 | 1.4576 | 1.4809 | 0.02336 | 0.28735 | 0.081 | 0.9378 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 4.397 | 25.000 | 1.7379 | 0.1730 | 10.047 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Metals data
Metals assessment
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for metals in sediment
- Accessment criteria for metals in sediment
Media : Sediment (unsieved)
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : Arsenic
Units : mg kg -1 dry weight normalised to 5% aluminium
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : Arsenic
Units : mg kg -1 dry weight normalised to 5% aluminium
Data extraction : 30 April 2020