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 | 0.10295 | -0.688 | 0.5171 |
| last 20 years | 2006 | 2013 | 4.207 | 4.136 | -0.07083 | 0.10295 | -0.688 | 0.5171 |
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 |
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
