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 | 47.22 | 48.50 | -20.61 | 41.22 | | | |
| linear | 2 | 48.17 | 50.63 | -20.08 | 40.17 | 1.048 | 1 | 0.3060 |
| smooth (df = 2) | 3 | 44.44 | 48.61 | -17.22 | 34.44 | 5.726 | 1 | 0.0167 |
| smooth (df = 3) | 4 | 46.39 | 52.94 | -17.20 | 34.39 | 0.052 | 1 | 0.8201 |
| smooth (df = 4) | 5 | 48.25 | 58.05 | -17.12 | 34.25 | 0.141 | 1 | 0.7070 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 2.3615 | 2.1636 | -0.19790 | 0.19029 | -1.040 | 0.3148 |
| last 20 years | 2000 | 2017 | 2.3615 | 2.1636 | -0.19790 | 0.19029 | -1.040 | 0.3148 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 8.703 | 25.000 | 1.0552 | 0.1134 | 9.307 | <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
