CSEMP assessment of CB28 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 | 59.84 | 62.42 | -26.92 | 53.84 | | | |
| linear | 2 | 56.12 | 61.45 | -24.06 | 48.12 | 5.723 | 1 | 0.0167 |
| smooth (df = 2) | 3 | 57.54 | 67.54 | -23.77 | 47.54 | 0.580 | 1 | 0.4462 |
| smooth (df = 3) | 4 | 56.07 | 74.07 | -22.04 | 44.07 | 3.466 | 1 | 0.0626 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2007 | 2017 | -1.4396 | -0.5841 | 0.8554 | 0.3111 | 2.750 | 0.0251 |
| last 20 years | 2007 | 2017 | -1.4396 | -0.5841 | 0.8554 | 0.3111 | 2.750 | 0.0251 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.5576 | 0.2200 | -0.9300 | 0.1689 | -5.507 | 0.9997 |
| EAC | 0.5576 | 1.7000 | 1.1148 | 0.1689 | 6.601 | <0.0001 |
Raw data with supporting information
__sdmn_cb28_au.jpg "Raw data with supporting information for assessment of CB28 in sediment at middle (Firth of Clyde)")
Raw data with assessment
__sdmn_cb28_da.jpg "Raw data with assessment of CB28 in sediment at middle (Firth of Clyde)")
Assessment plot
__sdmn_cb28_as.jpg "Assessment plot for CB28 in sediment at middle (Firth of Clyde)")
Chlorobiphenyls data
__sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB28 in sediment at middle (Firth of Clyde)")
Chlorobiphenyls assessment
__sdmn_chlras.jpg "Chlorobiphenyls assessment of CB28 in sediment at middle (Firth of Clyde)")
Related pages
