CSEMP assessment of lead in biota at South Eddystone
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 66.24 | 70.74 | -30.12 | 60.24 | | | |
| linear | 2 | 67.46 | 78.13 | -29.73 | 59.46 | 0.777 | 1 | 0.3780 |
| smooth (df = 2) | 3 | 62.58 | 87.58 | -26.29 | 52.58 | 6.880 | 1 | 0.0087 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2014 | 4.202 | 4.639 | 0.4362 | 0.4804 | 0.908 | 0.4055 |
| last 20 years | 2005 | 2014 | 4.202 | 4.639 | 0.4362 | 0.4804 | 0.908 | 0.4055 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 103.4 | 26.0 | -1.3806 | 0.3035 | -4.548 | 0.9969 |
| EC | 103.4 | 1500.0 | 2.6745 | 0.3035 | 8.811 | 0.0002 |
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 biota
- Accessment criteria for metals in biota
