CSEMP assessment of CB118 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 | 71.77 | 74.77 | -32.89 | 65.77 | | | |
| linear | 2 | 73.76 | 80.16 | -32.88 | 65.76 | 0.010 | 1 | 0.9207 |
| smooth (df = 2) | 3 | 74.33 | 86.83 | -32.17 | 64.33 | 1.430 | 1 | 0.2317 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2017 | -2.1293 | -2.0153 | 0.1139 | 1.1161 | 0.102 | 0.9215 |
| last 20 years | 2006 | 2017 | -2.1293 | -2.0153 | 0.1139 | 1.1161 | 0.102 | 0.9215 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.1333 | 0.1700 | 0.2434 | 0.6774 | 0.359 | 0.3650 |
| EAC | 0.1333 | 0.6000 | 1.5045 | 0.6774 | 2.221 | 0.0309 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
