CSEMP assessment of dibenzothiophene in sediment at outer (Firth of Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 90.71 | 92.09 | -42.35 | 84.71 | | | |
| linear | 2 | 85.67 | 88.33 | -38.83 | 77.67 | 7.039 | 1 | 0.0080 |
| smooth (df = 2) | 3 | 76.40 | 80.95 | -33.20 | 66.40 | 11.262 | 1 | 0.0008 |
| smooth (df = 3) | 4 | 78.37 | 85.57 | -33.19 | 66.37 | 0.034 | 1 | 0.8541 |
| smooth (df = 4) | 5 | 79.18 | 90.07 | -32.59 | 65.18 | 1.189 | 1 | 0.2755 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2017 | 2.6640 | 1.8669 | -0.7971 | 0.2048 | -3.892 | 0.0019 |
| last 20 years | 2000 | 2017 | 2.6640 | 1.8669 | -0.7971 | 0.2048 | -3.892 | 0.0019 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| ERL | 6.47 | 190.00 | 3.380 | 0.171 | 19.822 | <0.0001 |
Raw data with supporting information
__sdmn_dbt_au.jpg "Raw data with supporting information for assessment of dibenzothiophene in sediment at outer (Firth of Clyde)")
Raw data with assessment
__sdmn_dbt_da.jpg "Raw data with assessment of dibenzothiophene in sediment at outer (Firth of Clyde)")
Assessment plot
__sdmn_dbt_as.jpg "Assessment plot for dibenzothiophene in sediment at outer (Firth of Clyde)")
PAH (parent) data
__sdmn_p(p)da.jpg "PAH (parent) data for assessment of dibenzothiophene in sediment at outer (Firth of Clyde)")
PAH (parent) assessment
__sdmn_p(p)as.jpg "PAH (parent) assessment of dibenzothiophene in sediment at outer (Firth of Clyde)")
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