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 | 134.59 | 136.09 | -64.29 | 128.59 | | | |
| linear | 2 | 133.25 | 136.16 | -62.63 | 125.25 | 3.335 | 1 | 0.0678 |
| smooth (df = 2) | 3 | 134.76 | 139.76 | -62.38 | 124.76 | 0.496 | 1 | 0.4813 |
| smooth (df = 3) | 4 | 133.33 | 141.33 | -60.66 | 121.33 | 3.429 | 1 | 0.0641 |
| smooth (df = 4) | 5 | 134.87 | 147.12 | -60.43 | 120.87 | 0.463 | 1 | 0.4963 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2017 | -0.5366 | -0.0096 | 0.5270 | 0.2725 | 1.934 | 0.0752 |
| last 20 years | 1999 | 2017 | -0.5366 | -0.0096 | 0.5270 | 0.2725 | 1.934 | 0.0752 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.9905 | 0.2200 | -1.5046 | 0.1449 | -10.382 | 1.0000 |
| EAC | 0.9905 | 1.7000 | 0.5402 | 0.1449 | 3.727 | 0.0013 |
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
