CSEMP assessment of arsenic in sediment at inner (Firth of Forth)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 65.67 | 66.87 | -29.83 | 59.67 | | | |
| linear | 2 | 66.24 | 68.53 | -29.12 | 58.24 | 1.424 | 1 | 0.2328 |
| smooth (df = 2) | 3 | 64.22 | 68.06 | -27.11 | 54.22 | 4.027 | 1 | 0.0448 |
| smooth (df = 3) | 4 | 66.16 | 72.16 | -27.08 | 54.16 | 0.054 | 1 | 0.8156 |
| smooth (df = 4) | 5 | 68.14 | 77.05 | -27.07 | 54.14 | 0.020 | 1 | 0.8884 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2016 | 2.4132 | 2.5926 | 0.17941 | 0.14780 | 1.214 | 0.2424 |
| last 20 years | 1999 | 2016 | 2.4132 | 2.5926 | 0.17941 | 0.14780 | 1.214 | 0.2424 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 13.365 | 25.000 | 0.6263 | 0.0859 | 7.287 | <0.0001 |
Raw data with supporting information
__sdmn_as_au.jpg "Raw data with supporting information for assessment of arsenic in sediment at inner (Firth of Forth)")
Raw data with assessment
__sdmn_as_da.jpg "Raw data with assessment of arsenic in sediment at inner (Firth of Forth)")
Assessment plot
__sdmn_as_as.jpg "Assessment plot for arsenic in sediment at inner (Firth of Forth)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of arsenic in sediment at inner (Firth of Forth)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of arsenic in sediment at inner (Firth of Forth)")
Related pages
- Clean Seas Environment Monitoring Programme (CSEMP) accessment viewer tool
- Assessment methodology for metals in sediment
- Accessment criteria for metals in sediment
