CSEMP assessment of CB138 in sediment at Fladen Ground
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 53.35 | 56.95 | -23.67 | 47.35 | | | |
| linear | 2 | 54.13 | 62.13 | -23.06 | 46.13 | 1.224 | 1 | 0.2686 |
| smooth (df = 2) | 3 | 52.04 | 68.70 | -21.02 | 42.04 | 4.088 | 1 | 0.0432 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2018 | -2.4560 | -1.9256 | 0.5304 | 0.4644 | 1.142 | 0.2969 |
| last 20 years | 2005 | 2018 | -2.4560 | -1.9256 | 0.5304 | 0.4644 | 1.142 | 0.2969 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.146 | 0.150 | 0.028 | 0.319 | 0.089 | 0.4659 |
| EAC | 0.146 | 7.900 | 3.992 | 0.319 | 12.517 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
