CSEMP assessment of mercury 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 | 2.19 | 6.69 | 1.90 | -3.81 | |||
linear | 2 | 3.79 | 14.46 | 2.10 | -4.21 | 0.399 | 1 | 0.5276 |
smooth (df = 2) | 3 | 5.14 | 30.14 | 2.43 | -4.86 | 0.655 | 1 | 0.4182 |
Change in log concentration
Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
---|---|---|---|---|---|---|---|---|
overall | 2006 | 2013 | -3.206 | -3.311 | -0.10494 | 0.16633 | -0.631 | 0.5558 |
last 20 years | 2006 | 2013 | -3.206 | -3.311 | -0.10494 | 0.16633 | -0.631 | 0.5558 |
Status assessment
Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
---|---|---|---|---|---|---|
BAC | 0.0365 | 0.0700 | 0.6512 | 0.1232 | 5.284 | 0.0016 |
ERL | 0.0365 | 0.1500 | 1.4134 | 0.1232 | 11.469 | <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 : Mercury
Units : mg kg -1 dry weight normalised to 5% aluminium
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : Mercury
Units : mg kg -1 dry weight normalised to 5% aluminium
Data extraction : 30 April 2020