CSEMP assessment of zinc 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 | 2.28 | 5.88 | 1.86 | -3.72 | | | |
| linear | 2 | 4.19 | 12.19 | 1.90 | -3.81 | 0.090 | 1 | 0.7645 |
| smooth (df = 2) | 3 | 4.28 | 20.95 | 2.86 | -5.72 | 1.908 | 1 | 0.1671 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2013 | 4.082 | 4.035 | -0.04709 | 0.15620 | -0.301 | 0.7732 |
| last 20 years | 2006 | 2013 | 4.082 | 4.035 | -0.04709 | 0.15620 | -0.301 | 0.7732 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 56.53 | 122.00 | 0.7693 | 0.0961 | 8.001 | 0.0001 |
| ERL | 56.53 | 150.00 | 0.9759 | 0.0961 | 10.150 | <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
