CSEMP assessment of nickel 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 | -17.71 | -16.42 | 11.86 | -23.71 | | | |
| linear | 2 | -22.28 | -19.82 | 15.14 | -30.28 | 6.567 | 1 | 0.0104 |
| smooth (df = 2) | 3 | -44.66 | -40.49 | 27.33 | -54.66 | 24.382 | 1 | <0.0001 |
| smooth (df = 3) | 4 | -43.25 | -36.70 | 27.62 | -55.25 | 0.589 | 1 | 0.4427 |
| smooth (df = 4) | 5 | -41.52 | -31.72 | 27.76 | -55.52 | 0.270 | 1 | 0.6036 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 4.458 | 3.795 | -0.6630 | 0.1216 | -5.453 | <0.0001 |
| last 20 years | 2000 | 2017 | 4.458 | 3.795 | -0.6630 | 0.1216 | -5.453 | <0.0001 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 44.47 | 36.00 | -0.21133 | 0.09788 | -2.159 | 0.9757 |
Raw data with supporting information
__sdmn_ni_au.jpg "Raw data with supporting information for assessment of nickel in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_ni_da.jpg "Raw data with assessment of nickel in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_ni_as.jpg "Assessment plot for nickel in sediment at outer (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of nickel in sediment at outer (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of nickel 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
