CSEMP assessment of CB180 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 | 36.66 | 41.16 | -15.33 | 30.66 | | | |
| linear | 2 | 38.49 | 49.16 | -15.25 | 30.49 | 0.169 | 1 | 0.6808 |
| smooth (df = 2) | 3 | 40.16 | 65.16 | -15.08 | 30.16 | 0.339 | 1 | 0.5604 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2018 | -2.9743 | -3.1559 | -0.1816 | 0.4338 | -0.419 | 0.6929 |
| last 20 years | 2005 | 2018 | -2.9743 | -3.1559 | -0.1816 | 0.4338 | -0.419 | 0.6929 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.043 | 0.100 | 0.853 | 0.238 | 3.584 | 0.0079 |
| EAC | 0.043 | 12.000 | 5.641 | 0.238 | 23.692 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
