CSEMP assessment of arsenic in sediment at outer (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 44.72 | 46.10 | -19.36 | 38.72 | | | |
| linear | 2 | 44.09 | 46.75 | -18.04 | 36.09 | 2.631 | 1 | 0.1048 |
| smooth (df = 2) | 3 | 42.82 | 47.36 | -16.41 | 32.82 | 3.268 | 1 | 0.0707 |
| smooth (df = 3) | 4 | 44.82 | 52.02 | -16.41 | 32.82 | 0.000 | 1 | 0.9866 |
| smooth (df = 4) | 5 | 46.73 | 57.62 | -16.36 | 32.73 | 0.091 | 1 | 0.7630 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2016 | 2.4068 | 2.0855 | -0.3213 | 0.1900 | -1.691 | 0.1129 |
| last 20 years | 2000 | 2016 | 2.4068 | 2.0855 | -0.3213 | 0.1900 | -1.691 | 0.1129 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 8.048 | 25.000 | 1.1334 | 0.1134 | 9.999 | <0.0001 |
Raw data with supporting information
__sdmn_as_au.jpg "Raw data with supporting information for assessment of arsenic in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_as_da.jpg "Raw data with assessment of arsenic in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_as_as.jpg "Assessment plot for arsenic in sediment at outer (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of arsenic in sediment at outer (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of arsenic in sediment at outer (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
