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 | -33.93 | -31.68 | 19.97 | -39.93 | | | |
| linear | 2 | -34.78 | -30.21 | 21.39 | -42.78 | 2.846 | 1 | 0.0916 |
| smooth (df = 2) | 3 | -33.01 | -24.68 | 21.51 | -43.01 | 0.231 | 1 | 0.6306 |
| smooth (df = 3) | 4 | -31.84 | -17.44 | 21.92 | -43.84 | 0.830 | 1 | 0.3623 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2017 | 2.2184 | 2.3640 | 0.14566 | 0.08426 | 1.729 | 0.1179 |
| last 20 years | 2006 | 2017 | 2.2184 | 2.3640 | 0.14566 | 0.08426 | 1.729 | 0.1179 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 10.634 | 25.000 | 0.8548 | 0.0413 | 20.705 | <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
