CSEMP assessment of nickel 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 | -6.71 | -3.11 | 6.35 | -12.71 | | | |
| linear | 2 | -4.96 | 3.04 | 6.48 | -12.96 | 0.246 | 1 | 0.6198 |
| smooth (df = 2) | 3 | -3.27 | 13.39 | 6.64 | -13.27 | 0.319 | 1 | 0.5722 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2013 | 3.370 | 3.316 | -0.05355 | 0.10681 | -0.501 | 0.6340 |
| last 20 years | 2006 | 2013 | 3.370 | 3.316 | -0.05355 | 0.10681 | -0.501 | 0.6340 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 27.56 | 36.00 | 0.26727 | 0.06486 | 4.121 | 0.0031 |
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
