CSEMP assessment of mercury 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 | 120.88 | 122.68 | -57.44 | 114.88 | | | |
| linear | 2 | 117.27 | 120.82 | -54.63 | 109.27 | 5.611 | 1 | 0.0179 |
| smooth (df = 2) | 3 | 113.17 | 119.42 | -51.58 | 103.17 | 6.099 | 1 | 0.0135 |
| smooth (df = 3) | 4 | 115.16 | 125.45 | -51.58 | 103.16 | 0.004 | 1 | 0.9524 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2001 | 2017 | -1.1031 | -2.5083 | -1.4052 | 0.3662 | -3.838 | 0.0033 |
| last 20 years | 2001 | 2017 | -1.1031 | -2.5083 | -1.4052 | 0.3662 | -3.838 | 0.0033 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.08141 | 0.07000 | -0.1509 | 0.2535 | -0.595 | 0.7176 |
| ERL | 0.08141 | 0.15000 | 0.6112 | 0.2535 | 2.411 | 0.0183 |
Raw data with supporting information
__sdmn_hg_au.jpg "Raw data with supporting information for assessment of mercury in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_hg_da.jpg "Raw data with assessment of mercury in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_hg_as.jpg "Assessment plot for mercury in sediment at outer (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of mercury in sediment at outer (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of mercury 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
