CSEMP assessment of chromium 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 | 60.22 | 62.22 | -27.11 | 54.22 | | | |
| linear | 2 | 59.65 | 63.65 | -25.82 | 51.65 | 2.570 | 1 | 0.1089 |
| smooth (df = 2) | 3 | 61.07 | 68.21 | -25.54 | 51.07 | 0.576 | 1 | 0.4477 |
| smooth (df = 3) | 4 | 59.84 | 71.84 | -23.92 | 47.84 | 3.231 | 1 | 0.0722 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2017 | 4.186 | 4.650 | 0.4643 | 0.2739 | 1.695 | 0.1210 |
| last 20 years | 2006 | 2017 | 4.186 | 4.650 | 0.4643 | 0.2739 | 1.695 | 0.1210 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| ERL | 104.57 | 81.00 | -0.25542 | 0.16115 | -1.585 | 0.9280 |
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
