CSEMP assessment of zinc in sediment at North Minch
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 4.92 | 7.17 | 0.54 | -1.08 | | | |
| linear | 2 | 6.87 | 11.44 | 0.57 | -1.13 | 0.047 | 1 | 0.8291 |
| smooth (df = 2) | 3 | 4.84 | 13.17 | 2.58 | -5.16 | 4.028 | 1 | 0.0447 |
| smooth (df = 3) | 4 | 6.46 | 20.86 | 2.77 | -5.54 | 0.383 | 1 | 0.5360 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2016 | 4.202 | 4.252 | 0.05048 | 0.23237 | 0.217 | 0.8329 |
| last 20 years | 2005 | 2016 | 4.202 | 4.252 | 0.05048 | 0.23237 | 0.217 | 0.8329 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 70.27 | 122.00 | 0.5517 | 0.1411 | 3.909 | 0.0018 |
| ERL | 70.27 | 150.00 | 0.7583 | 0.1411 | 5.373 | 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 sediment
- Accessment criteria for metals in sediment
