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 | 46.34 | 49.94 | -20.17 | 40.34 | | | |
| linear | 2 | 43.89 | 51.89 | -17.94 | 35.89 | 4.455 | 1 | 0.0348 |
| smooth (df = 2) | 3 | 42.49 | 59.16 | -16.25 | 32.49 | 3.392 | 1 | 0.0655 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2018 | -2.4445 | -1.6903 | 0.7542 | 0.3254 | 2.318 | 0.0596 |
| last 20 years | 2005 | 2018 | -2.4445 | -1.6903 | 0.7542 | 0.3254 | 2.318 | 0.0596 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.18 | 0.19 | 0.030 | 0.226 | 0.131 | 0.4501 |
| EAC | 0.18 | 40.00 | 5.379 | 0.226 | 23.796 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
