CSEMP assessment of BD153 in biota at Off Newhaven
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 103.79 | 108.29 | -48.90 | 97.79 | | | |
| linear | 2 | 97.34 | 108.01 | -44.67 | 89.34 | 8.454 | 1 | 0.0036 |
| smooth (df = 2) | 3 | 95.64 | 120.64 | -42.82 | 85.64 | 3.700 | 1 | 0.0544 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2017 | -1.011 | -3.188 | -2.1774 | 0.6672 | -3.264 | 0.0224 |
| last 20 years | 2005 | 2017 | -1.011 | -3.188 | -2.1774 | 0.6672 | -3.264 | 0.0224 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.041 | 0.012 | -1.235 | 0.463 | -2.667 | 0.9777 |
| FEQG | 0.041 | 4.000 | 4.574 | 0.463 | 9.880 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
