CSEMP assessment of CB180 in sediment at Hunterston (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 163.18 | 164.47 | -78.59 | 157.18 | | | |
| linear | 2 | 164.76 | 167.22 | -78.38 | 156.76 | 0.422 | 1 | 0.5160 |
| smooth (df = 2) | 3 | 165.02 | 169.18 | -77.51 | 155.02 | 1.745 | 1 | 0.1865 |
| smooth (df = 3) | 4 | 161.38 | 167.93 | -74.69 | 149.38 | 5.633 | 1 | 0.0176 |
| smooth (df = 4) | 5 | 161.63 | 171.43 | -73.82 | 147.63 | 1.754 | 1 | 0.1854 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | -0.6382 | -0.3646 | 0.2736 | 0.4110 | 0.666 | 0.5158 |
| last 20 years | 2000 | 2017 | -0.6382 | -0.3646 | 0.2736 | 0.4110 | 0.666 | 0.5158 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.694 | 0.100 | -1.9380 | 0.2254 | -8.597 | 1.0000 |
| EAC | 0.694 | 12.000 | 2.8495 | 0.2254 | 12.641 | <0.0001 |
Raw data with supporting information
_sdmn_cb180_au.jpg "Raw data with supporting information for assessment of CB180 in sediment at Hunterston (Clyde)")
Raw data with assessment
_sdmn_cb180_da.jpg "Raw data with assessment of CB180 in sediment at Hunterston (Clyde)")
Assessment plot
_sdmn_cb180_as.jpg "Assessment plot for CB180 in sediment at Hunterston (Clyde)")
Chlorobiphenyls data
_sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB180 in sediment at Hunterston (Clyde)")
Chlorobiphenyls assessment
_sdmn_chlras.jpg "Chlorobiphenyls assessment of CB180 in sediment at Hunterston (Clyde)")
Related pages
