CSEMP assessment of chromium in sediment at inner (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 5.96 | 7.16 | 0.02 | -0.04 | | | |
| linear | 2 | 4.32 | 6.60 | 1.84 | -3.68 | 3.646 | 1 | 0.0562 |
| smooth (df = 2) | 3 | 5.24 | 9.09 | 2.38 | -4.76 | 1.078 | 1 | 0.2991 |
| smooth (df = 3) | 4 | 7.22 | 13.22 | 2.39 | -4.78 | 0.021 | 1 | 0.8851 |
| smooth (df = 4) | 5 | 7.65 | 16.56 | 3.18 | -6.35 | 1.570 | 1 | 0.2102 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2017 | 5.019 | 4.774 | -0.24419 | 0.12263 | -1.991 | 0.0638 |
| last 20 years | 1999 | 2017 | 5.019 | 4.774 | -0.24419 | 0.12263 | -1.991 | 0.0638 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| ERL | 118.44 | 81.00 | -0.380 | 0.072 | -5.277 | 1.0000 |
Raw data with supporting information
__sdmn_cr_au.jpg "Raw data with supporting information for assessment of chromium in sediment at inner (Firth of Clyde)")
Raw data with assessment
__sdmn_cr_da.jpg "Raw data with assessment of chromium in sediment at inner (Firth of Clyde)")
Assessment plot
__sdmn_cr_as.jpg "Assessment plot for chromium in sediment at inner (Firth of Clyde)")
Metals data
__sdmn_mtlsda.jpg "Metals data for assessment of chromium in sediment at inner (Firth of Clyde)")
Metals assessment
__sdmn_mtlsas.jpg "Metals assessment of chromium in sediment at inner (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
