CSEMP assessment of lead in biota at NarrowWaterM
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -2.81 | 0.19 | 3.40 | -6.81 | | | |
| linear | 2 | -1.09 | 6.91 | 3.54 | -7.09 | 0.281 | 1 | 0.5963 |
| smooth (df = 2) | 3 | 0.80 | 20.80 | 3.60 | -7.20 | 0.112 | 1 | 0.7384 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2011 | 2017 | 6.536 | 6.447 | -0.08848 | 0.16535 | -0.535 | 0.6155 |
| last 20 years | 2011 | 2017 | 6.536 | 6.447 | -0.08848 | 0.16535 | -0.535 | 0.6155 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 630.9 | 211.9 | -1.0911 | 0.0994 | -10.980 | 0.9999 |
| EC | 630.9 | 1500.0 | 0.8661 | 0.0994 | 8.716 | 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
