CSEMP assessment of chromium 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 | -10.18 | -6.58 | 8.09 | -16.18 | |||
| linear | 2 | -8.58 | -0.58 | 8.29 | -16.58 | 0.399 | 1 | 0.5274 |
| smooth (df = 2) | 3 | -8.42 | 8.24 | 9.21 | -18.42 | 1.846 | 1 | 0.1742 |
Change in log concentration
| Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) | |
|---|---|---|---|---|---|---|---|---|
| overall | 2006 | 2013 | 4.207 | 4.136 | -0.07083 | 0.10296 | -0.688 | 0.5172 |
| last 20 years | 2006 | 2013 | 4.207 | 4.136 | -0.07083 | 0.10296 | -0.688 | 0.5172 |
Status assessment
| Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) | |
|---|---|---|---|---|---|---|
| ERL | 62.56 | 81.00 | 0.25829 | 0.06623 | 3.900 | 0.0040 |
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for in sediment
- Accessment criteria for in sediment
Media : Sediment (unsieved)
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : Chromium
Units : mg kg -1 dry weight normalised to 5% aluminium
Data extraction : 30 April 2020
Station : Fladen_FlaOpenSea_se02 (Fladen Ground)
Determinand : Chromium
Units : mg kg -1 dry weight normalised to 5% aluminium
Data extraction : 30 April 2020