CSEMP assessment of CB153 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 | 15.69 | 20.19 | -4.84 | 9.69 | | | |
| linear | 2 | 16.73 | 27.40 | -4.37 | 8.73 | 0.953 | 1 | 0.3289 |
| smooth (df = 2) | 3 | 16.72 | 41.72 | -3.36 | 6.72 | 2.016 | 1 | 0.1557 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2013 | -2.3522 | -2.0736 | 0.27863 | 0.27705 | 1.006 | 0.3607 |
| last 20 years | 2005 | 2013 | -2.3522 | -2.0736 | 0.27863 | 0.27705 | 1.006 | 0.3607 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.13 | 0.19 | 0.413 | 0.164 | 2.520 | 0.0266 |
| EAC | 0.13 | 40.00 | 5.762 | 0.164 | 35.168 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
