CSEMP assessment of CB118 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 | 26.40 | 28.97 | -10.20 | 20.40 | | | |
| linear | 2 | 23.71 | 29.04 | -7.86 | 15.71 | 4.686 | 1 | 0.0304 |
| smooth (df = 2) | 3 | 25.49 | 35.49 | -7.74 | 15.49 | 0.223 | 1 | 0.6366 |
| smooth (df = 3) | 4 | 27.24 | 45.24 | -7.62 | 15.24 | 0.243 | 1 | 0.6217 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 0.9234 | 0.0014 | -0.9220 | 0.3798 | -2.428 | 0.0413 |
| last 20 years | 2000 | 2017 | 0.9234 | 0.0014 | -0.9220 | 0.3798 | -2.428 | 0.0413 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 1.0014 | 0.0978 | -2.3262 | 0.2310 | -10.071 | 1.0000 |
| EAC | 1.0014 | 0.3250 | -1.1253 | 0.2310 | -4.872 | 0.9994 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
