CSEMP assessment of mercury in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 2.19 | 6.69 | 1.90 | -3.81 | | | |
| linear | 2 | 3.79 | 14.46 | 2.10 | -4.21 | 0.399 | 1 | 0.5276 |
| smooth (df = 2) | 3 | 5.14 | 30.14 | 2.43 | -4.86 | 0.655 | 1 | 0.4182 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2013 | -3.206 | -3.311 | -0.10494 | 0.16634 | -0.631 | 0.5558 |
| last 20 years | 2006 | 2013 | -3.206 | -3.311 | -0.10494 | 0.16634 | -0.631 | 0.5558 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.0365 | 0.0700 | 0.6512 | 0.1232 | 5.284 | 0.0016 |
| ERL | 0.0365 | 0.1500 | 1.4134 | 0.1232 | 11.469 | <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 sediment
- Accessment criteria for metals in sediment
