CSEMP assessment of lead in biota at MiddleBankM
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -4.35 | -1.35 | 4.17 | -8.35 | | | |
| linear | 2 | -3.07 | 4.93 | 4.53 | -9.07 | 0.720 | 1 | 0.3962 |
| smooth (df = 2) | 3 | -1.12 | 18.88 | 4.56 | -9.12 | 0.052 | 1 | 0.8192 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2011 | 2017 | 6.621 | 6.496 | -0.12504 | 0.14360 | -0.871 | 0.4237 |
| last 20 years | 2011 | 2017 | 6.621 | 6.496 | -0.12504 | 0.14360 | -0.871 | 0.4237 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 662.3 | 211.9 | -1.1396 | 0.0863 | -13.206 | 1.0000 |
| EC | 662.3 | 1500.0 | 0.8175 | 0.0863 | 9.474 | 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
