CSEMP assessment of BD154 in biota at Camarthen Bay
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 64.27 | 67.87 | -29.13 | 58.27 | | | |
| linear | 2 | 66.14 | 74.14 | -29.07 | 58.14 | 0.131 | 1 | 0.7178 |
| smooth (df = 2) | 3 | 68.13 | 84.80 | -29.07 | 58.13 | 0.004 | 1 | 0.9480 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2005 | 2018 | -1.1547 | -1.0036 | 0.1511 | 0.4170 | 0.362 | 0.7296 |
| last 20 years | 2005 | 2018 | -1.1547 | -1.0036 | 0.1511 | 0.4170 | 0.362 | 0.7296 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.367 | 0.012 | -3.419 | 0.263 | -13.020 | 1.0000 |
| FEQG | 0.367 | 4.000 | 2.390 | 0.263 | 9.100 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
