CSEMP assessment of CB180 in biota at Tees Bay
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 72.07 | 74.32 | -33.03 | 66.07 | | | |
| linear | 2 | 67.02 | 71.59 | -29.51 | 59.02 | 7.050 | 1 | 0.0079 |
| smooth (df = 2) | 3 | 65.10 | 73.43 | -27.55 | 55.10 | 3.923 | 1 | 0.0476 |
| smooth (df = 3) | 4 | 61.28 | 75.68 | -24.64 | 49.28 | 5.819 | 1 | 0.0159 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2001 | 2017 | 2.0814 | 0.8206 | -1.2608 | 0.4017 | -3.139 | 0.0119 |
| last 20 years | 2001 | 2017 | 2.0814 | 0.8206 | -1.2608 | 0.4017 | -3.139 | 0.0119 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 2.27 | 0.11 | -3.028 | 0.232 | -13.054 | 1.0000 |
| EAC | 2.27 | 91.92 | 3.700 | 0.232 | 15.953 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
