CSEMP assessment of lead 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 | -6.96 | -4.39 | 6.48 | -12.96 | | | |
| linear | 2 | -5.98 | -0.65 | 6.99 | -13.98 | 1.020 | 1 | 0.3124 |
| smooth (df = 2) | 3 | -11.54 | -1.54 | 10.77 | -21.54 | 7.560 | 1 | 0.0060 |
| smooth (df = 3) | 4 | -10.30 | 7.70 | 11.15 | -22.30 | 0.757 | 1 | 0.3841 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2016 | 3.976 | 3.825 | -0.15032 | 0.13320 | -1.129 | 0.2918 |
| last 20 years | 2006 | 2016 | 3.976 | 3.825 | -0.15032 | 0.13320 | -1.129 | 0.2918 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 45.85 | 38.00 | -0.18769 | 0.06546 | -2.867 | 0.9895 |
| ERL | 45.85 | 47.00 | 0.02487 | 0.06546 | 0.380 | 0.3569 |
Raw data with supporting information
__sdmn_pb_au.jpg "Raw data with supporting information for assessment of lead in sediment at middle (Firth of Clyde)")
Raw data with assessment
__sdmn_pb_da.jpg "Raw data with assessment of lead in sediment at middle (Firth of Clyde)")
Assessment plot
__sdmn_pb_as.jpg "Assessment plot for lead in sediment at middle (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of lead in sediment at middle (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of lead 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
