CSEMP assessment of BD100 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 | 84.99 | 87.24 | -39.50 | 78.99 | | | |
| linear | 2 | 85.68 | 90.25 | -38.84 | 77.68 | 1.313 | 1 | 0.2518 |
| smooth (df = 2) | 3 | 86.75 | 95.08 | -38.37 | 76.75 | 0.932 | 1 | 0.3343 |
| smooth (df = 3) | 4 | 87.58 | 101.98 | -37.79 | 75.58 | 1.163 | 1 | 0.2808 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2003 | 2018 | -0.2209 | -1.0551 | -0.8342 | 0.7270 | -1.147 | 0.2808 |
| last 20 years | 2003 | 2018 | -0.2209 | -1.0551 | -0.8342 | 0.7270 | -1.147 | 0.2808 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.3481 | 0.0120 | -3.368 | 0.432 | -7.798 | 1.0000 |
| FEQG | 0.3481 | 1.0000 | 1.055 | 0.432 | 2.443 | 0.0186 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
