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 | 72.68 | 76.28 | -33.34 | 66.68 | | | |
| linear | 2 | 72.00 | 80.00 | -32.00 | 64.00 | 2.680 | 1 | 0.1016 |
| smooth (df = 2) | 3 | 71.89 | 88.55 | -30.94 | 61.89 | 2.111 | 1 | 0.1462 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2018 | 4.164 | 4.960 | 0.7961 | 0.4447 | 1.790 | 0.1236 |
| last 20 years | 2005 | 2018 | 4.164 | 4.960 | 0.7961 | 0.4447 | 1.790 | 0.1236 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 142.7 | 26.0 | -1.7023 | 0.2984 | -5.704 | 0.9994 |
| EC | 142.7 | 1500.0 | 2.3528 | 0.2984 | 7.884 | 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 biota
- Accessment criteria for metals in biota
