CSEMP assessment of CB28 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 | 137.51 | 138.89 | -65.75 | 131.51 | | | |
| linear | 2 | 137.45 | 140.12 | -64.73 | 129.45 | 2.057 | 1 | 0.1515 |
| smooth (df = 2) | 3 | 139.44 | 143.99 | -64.72 | 129.44 | 0.007 | 1 | 0.9316 |
| smooth (df = 3) | 4 | 135.85 | 143.05 | -61.92 | 123.85 | 5.598 | 1 | 0.0180 |
| smooth (df = 4) | 5 | 137.81 | 148.70 | -61.91 | 123.81 | 0.030 | 1 | 0.8622 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2018 | -0.4848 | -0.0759 | 0.4089 | 0.2762 | 1.480 | 0.1609 |
| last 20 years | 1999 | 2018 | -0.4848 | -0.0759 | 0.4089 | 0.2762 | 1.480 | 0.1609 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.9269 | 0.2200 | -1.4382 | 0.1471 | -9.777 | 1.0000 |
| EAC | 0.9269 | 1.7000 | 0.6065 | 0.1471 | 4.123 | 0.0005 |
Raw data with supporting information
__sdmn_cb28_au.jpg "Raw data with supporting information for assessment of CB28 in sediment at inner (Firth of Clyde)")
Raw data with assessment
__sdmn_cb28_da.jpg "Raw data with assessment of CB28 in sediment at inner (Firth of Clyde)")
Assessment plot
__sdmn_cb28_as.jpg "Assessment plot for CB28 in sediment at inner (Firth of Clyde)")
Chlorobiphenyls data
__sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB28 in sediment at inner (Firth of Clyde)")
Chlorobiphenyls assessment
__sdmn_chlras.jpg "Chlorobiphenyls assessment of CB28 in sediment at inner (Firth of Clyde)")
Related pages
