CSEMP assessment of lead in biota at West Lundy
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 27.35 | 36.35 | -10.68 | 21.35 | | | |
| linear | 2 | 19.88 | 51.88 | -5.94 | 11.88 | 9.479 | 1 | 0.0021 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2018 | 6.447 | 5.345 | -1.1012 | 0.1990 | -5.535 | 0.0116 |
| last 20 years | 2005 | 2018 | 6.447 | 5.345 | -1.1012 | 0.1990 | -5.535 | 0.0116 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 209.7 | 26.0 | -2.0874 | 0.1229 | -16.984 | 0.9998 |
| EC | 209.7 | 1500.0 | 1.9677 | 0.1229 | 16.010 | 0.0003 |
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
