CSEMP assessment of lead 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 | 64.34 | 65.63 | -29.17 | 58.34 | | | |
| linear | 2 | 61.48 | 63.94 | -26.74 | 53.48 | 4.865 | 1 | 0.0274 |
| smooth (df = 2) | 3 | 54.59 | 58.75 | -22.29 | 44.59 | 8.891 | 1 | 0.0029 |
| smooth (df = 3) | 4 | 56.30 | 62.84 | -22.15 | 44.30 | 0.289 | 1 | 0.5910 |
| smooth (df = 4) | 5 | 55.13 | 64.93 | -20.56 | 41.13 | 3.170 | 1 | 0.0750 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 4.610 | 3.854 | -0.7553 | 0.2627 | -2.875 | 0.0122 |
| last 20 years | 2000 | 2017 | 4.610 | 3.854 | -0.7553 | 0.2627 | -2.875 | 0.0122 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 47.2 | 38.0 | -0.21678 | 0.21615 | -1.003 | 0.8335 |
| ERL | 47.2 | 47.0 | -0.00421 | 0.21615 | -0.019 | 0.5076 |
Raw data with supporting information
__sdmn_pb_au.jpg "Raw data with supporting information for assessment of lead in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_pb_da.jpg "Raw data with assessment of lead in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_pb_as.jpg "Assessment plot for lead in sediment at outer (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of lead in sediment at outer (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of lead 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
