CSEMP assessment of CB153 in sediment at middle (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 65.13 | 67.13 | -29.56 | 59.13 | | | |
| linear | 2 | 59.41 | 63.41 | -25.71 | 51.41 | 7.714 | 1 | 0.0055 |
| smooth (df = 2) | 3 | 55.79 | 62.93 | -22.89 | 45.79 | 5.626 | 1 | 0.0177 |
| smooth (df = 3) | 4 | 57.47 | 69.47 | -22.73 | 45.47 | 0.321 | 1 | 0.5712 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2017 | -0.8334 | -0.1198 | 0.7137 | 0.1830 | 3.899 | 0.0036 |
| last 20 years | 2006 | 2017 | -0.8334 | -0.1198 | 0.7137 | 0.1830 | 3.899 | 0.0036 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.89 | 0.19 | -1.541 | 0.142 | -10.882 | 1.0000 |
| EAC | 0.89 | 40.00 | 3.809 | 0.142 | 26.895 | <0.0001 |
Raw data with supporting information
__sdmn_cb153_au.jpg "Raw data with supporting information for assessment of CB153 in sediment at middle (Firth of Clyde)")
Raw data with assessment
__sdmn_cb153_da.jpg "Raw data with assessment of CB153 in sediment at middle (Firth of Clyde)")
Assessment plot
__sdmn_cb153_as.jpg "Assessment plot for CB153 in sediment at middle (Firth of Clyde)")
Chlorobiphenyls data
__sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB153 in sediment at middle (Firth of Clyde)")
Chlorobiphenyls assessment
__sdmn_chlras.jpg "Chlorobiphenyls assessment of CB153 in sediment at middle (Firth of Clyde)")
Related pages
