CSEMP assessment of DDE (p,p') in biota at Crosby (Mersey Channel)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 18.51 | 23.01 | -6.26 | 12.51 | | | |
| linear | 2 | 18.50 | 29.17 | -5.25 | 10.50 | 2.013 | 1 | 0.1560 |
| smooth (df = 2) | 3 | 16.26 | 41.26 | -3.13 | 6.26 | 4.241 | 1 | 0.0395 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2018 | 1.2141 | 0.5961 | -0.6181 | 0.4025 | -1.536 | 0.1852 |
| last 20 years | 2000 | 2018 | 1.2141 | 0.5961 | -0.6181 | 0.4025 | -1.536 | 0.1852 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.8150 | 0.1027 | -2.8721 | 0.2324 | -12.361 | 1.0000 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Pesticides data
Pesticides assessment
Related pages
