CSEMP assessment of CB138 in sediment at North Minch
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 94.62 | 96.62 | -44.31 | 88.62 | | | |
| linear | 2 | 93.94 | 97.94 | -42.97 | 85.94 | 2.684 | 1 | 0.1014 |
| smooth (df = 2) | 3 | 95.77 | 102.91 | -42.88 | 85.77 | 0.169 | 1 | 0.6814 |
| smooth (df = 3) | 4 | 96.72 | 108.72 | -42.36 | 84.72 | 1.052 | 1 | 0.3051 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2018 | -2.4398 | -1.2735 | 1.1663 | 0.6911 | 1.688 | 0.1224 |
| last 20 years | 2006 | 2018 | -2.4398 | -1.2735 | 1.1663 | 0.6911 | 1.688 | 0.1224 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.28 | 0.15 | -0.624 | 0.394 | -1.585 | 0.9279 |
| EAC | 0.28 | 7.90 | 3.340 | 0.394 | 8.487 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
