CSEMP assessment of CB138 in sediment at inner (Firth of Forth)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 140.98 | 142.48 | -67.49 | 134.98 | | | |
| linear | 2 | 139.62 | 142.53 | -65.81 | 131.62 | 3.361 | 1 | 0.0668 |
| smooth (df = 2) | 3 | 141.36 | 146.36 | -65.68 | 131.36 | 0.263 | 1 | 0.6079 |
| smooth (df = 3) | 4 | 133.41 | 141.41 | -60.71 | 121.41 | 9.944 | 1 | 0.0016 |
| smooth (df = 4) | 5 | 135.31 | 147.56 | -60.65 | 121.31 | 0.105 | 1 | 0.7455 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 1999 | 2018 | 0.3541 | -1.7457 | -2.0998 | 0.4159 | -5.049 | 0.0004 |
| last 20 years | 1999 | 2018 | 0.3541 | -1.7457 | -2.0998 | 0.4159 | -5.049 | 0.0004 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.175 | 0.150 | -0.151 | 0.299 | -0.507 | 0.6888 |
| EAC | 0.175 | 7.900 | 3.813 | 0.299 | 12.761 | <0.0001 |
Raw data with supporting information
__sdmn_cb138_au.jpg "Raw data with supporting information for assessment of CB138 in sediment at inner (Firth of Forth)")
Raw data with assessment
__sdmn_cb138_da.jpg "Raw data with assessment of CB138 in sediment at inner (Firth of Forth)")
Assessment plot
__sdmn_cb138_as.jpg "Assessment plot for CB138 in sediment at inner (Firth of Forth)")
Chlorobiphenyls data
__sdmn_chlrda.jpg "Chlorobiphenyls data for assessment of CB138 in sediment at inner (Firth of Forth)")
Chlorobiphenyls assessment
__sdmn_chlras.jpg "Chlorobiphenyls assessment of CB138 in sediment at inner (Firth of Forth)")
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