CSEMP assessment of CB153 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 | 89.86 | 92.11 | -41.93 | 83.86 | | | |
| linear | 2 | 87.84 | 92.41 | -39.92 | 79.84 | 4.023 | 1 | 0.0449 |
| smooth (df = 2) | 3 | 89.84 | 98.17 | -39.92 | 79.84 | 0.000 | 1 | 0.9853 |
| smooth (df = 3) | 4 | 89.76 | 104.16 | -38.88 | 77.76 | 2.080 | 1 | 0.1493 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2006 | 2017 | -2.4140 | -0.8575 | 1.5565 | 0.7126 | 2.184 | 0.0568 |
| last 20 years | 2006 | 2017 | -2.4140 | -0.8575 | 1.5565 | 0.7126 | 2.184 | 0.0568 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.42 | 0.19 | -0.803 | 0.407 | -1.972 | 0.9600 |
| EAC | 0.42 | 40.00 | 4.546 | 0.407 | 11.162 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Chlorobiphenyls data
Chlorobiphenyls assessment
Related pages
