CSEMP assessment of arsenic in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | -29.00 | -26.43 | 17.50 | -35.00 | | | |
| linear | 2 | -28.53 | -23.20 | 18.27 | -36.53 | 1.526 | 1 | 0.2167 |
| smooth (df = 2) | 3 | -27.46 | -17.46 | 18.73 | -37.46 | 0.930 | 1 | 0.3350 |
| smooth (df = 3) | 4 | -25.54 | -7.54 | 18.77 | -37.54 | 0.078 | 1 | 0.7803 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2016 | 2.230 | 2.338 | 0.10802 | 0.08647 | 1.249 | 0.2469 |
| last 20 years | 2006 | 2016 | 2.230 | 2.338 | 0.10802 | 0.08647 | 1.249 | 0.2469 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 10.361 | 25.000 | 0.8808 | 0.0411 | 21.424 | <0.0001 |
Raw data with supporting information
__sdmn_as_au.jpg "Raw data with supporting information for assessment of arsenic in sediment at middle (Firth of Clyde)")
Raw data with assessment
__sdmn_as_da.jpg "Raw data with assessment of arsenic in sediment at middle (Firth of Clyde)")
Assessment plot
__sdmn_as_as.jpg "Assessment plot for arsenic in sediment at middle (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of arsenic in sediment at middle (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of arsenic in sediment at middle (Firth of Clyde)")
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for metals in sediment
- Accessment criteria for metals in sediment
