CSEMP assessment of CB153 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 | 176.81 | 178.01 | -85.41 | 170.81 | | | |
| linear | 2 | 178.69 | 180.98 | -85.35 | 170.69 | 0.116 | 1 | 0.7338 |
| smooth (df = 2) | 3 | 180.67 | 184.52 | -85.34 | 170.67 | 0.022 | 1 | 0.8824 |
| smooth (df = 3) | 4 | 182.60 | 188.60 | -85.30 | 170.60 | 0.071 | 1 | 0.7893 |
| smooth (df = 4) | 5 | 183.64 | 192.55 | -84.82 | 169.64 | 0.960 | 1 | 0.3271 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2018 | -0.00244 | -0.14803 | -0.1456 | 0.4280 | -0.340 | 0.7381 |
| last 20 years | 2000 | 2018 | -0.00244 | -0.14803 | -0.1456 | 0.4280 | -0.340 | 0.7381 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.86 | 0.19 | -1.513 | 0.235 | -6.428 | 1.0000 |
| EAC | 0.86 | 40.00 | 3.837 | 0.235 | 16.304 | <0.0001 |
Raw data with supporting information
_sdmn_cb153_au.jpg "Raw data with supporting information for assessment of CB153 in sediment at Hunterston (Clyde)")
Raw data with assessment
_sdmn_cb153_da.jpg "Raw data with assessment of CB153 in sediment at Hunterston (Clyde)")
Assessment plot
_sdmn_cb153_as.jpg "Assessment plot for CB153 in sediment at Hunterston (Clyde)")
Chlorobiphenyls data
_sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB153 in sediment at Hunterston (Clyde)")
Chlorobiphenyls assessment
_sdmn_chlras.jpg "Chlorobiphenyls assessment of CB153 in sediment at Hunterston (Clyde)")
Related pages
