CSEMP assessment of CB118 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 | 142.32 | 143.61 | -68.16 | 136.32 | | | |
| linear | 2 | 144.30 | 146.76 | -68.15 | 136.30 | 0.021 | 1 | 0.8844 |
| smooth (df = 2) | 3 | 144.72 | 148.89 | -67.36 | 134.72 | 1.576 | 1 | 0.2093 |
| smooth (df = 3) | 4 | 140.33 | 146.88 | -64.17 | 128.33 | 6.388 | 1 | 0.0115 |
| smooth (df = 4) | 5 | 142.31 | 152.11 | -64.16 | 128.31 | 0.025 | 1 | 0.8748 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | -0.3689 | -0.4307 | -0.0617 | 0.4227 | -0.146 | 0.8858 |
| last 20 years | 2000 | 2017 | -0.3689 | -0.4307 | -0.0617 | 0.4227 | -0.146 | 0.8858 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.6501 | 0.1700 | -1.3413 | 0.2394 | -5.602 | 1.0000 |
| EAC | 0.6501 | 0.6000 | -0.0801 | 0.2394 | -0.335 | 0.6288 |
Raw data with supporting information
_sdmn_cb118_au.jpg "Raw data with supporting information for assessment of CB118 in sediment at Hunterston (Clyde)")
Raw data with assessment
_sdmn_cb118_da.jpg "Raw data with assessment of CB118 in sediment at Hunterston (Clyde)")
Assessment plot
_sdmn_cb118_as.jpg "Assessment plot for CB118 in sediment at Hunterston (Clyde)")
Chlorobiphenyls data
_sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB118 in sediment at Hunterston (Clyde)")
Chlorobiphenyls assessment
_sdmn_chlras.jpg "Chlorobiphenyls assessment of CB118 in sediment at Hunterston (Clyde)")
Related pages
