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 | 4.68 | 8.28 | 0.66 | -1.32 | | | |
| linear | 2 | 4.17 | 12.17 | 1.92 | -3.83 | 2.516 | 1 | 0.1127 |
| smooth (df = 2) | 3 | 5.45 | 22.11 | 2.28 | -4.55 | 0.720 | 1 | 0.3962 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2013 | 4.164 | 4.348 | 0.18389 | 0.11198 | 1.642 | 0.1517 |
| last 20 years | 2006 | 2013 | 4.164 | 4.348 | 0.18389 | 0.11198 | 1.642 | 0.1517 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| ERL | 77.3 | 81.0 | 0.04679 | 0.07616 | 0.614 | 0.2808 |
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
