This report was generated through the [ssdtools Shiny app](https://bcgov-env.shinyapps.io/ssdtools)
which fits species sensitivity distributions to concentration data. The app is built from the R package [ssdtools](https://cran.r-project.org/web/packages/ssdtools/), and shares the same functionality.
**Toxicant:** `r params$toxicant`
**Report created:** `r format(Sys.Date(), "%d/%m/%Y")`
**Input distributions:** `r params$dists`
**ssdtools version:** `r utils::packageVersion("ssdtools")`
**R version:** `r gsub("R version ", "", R.version$version.string)`
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# Fit of all distributions
```{r, message=FALSE, warning=FALSE}
params$fit_plot
Goodness of fit table
kable(params$gof_table)
Table 1. The goodness of fit statistics. 'dist' is the distribution name; 'ad' is the Anderson-Darling statistic; 'ks' is the Kolmogorov-Smirnov statistic; 'cvm' is the Cramer-von Mises statistic; 'aic' is the Akaike's Information Criterion; 'aicc' is the Akaike's Information Criterion corrected for sample size; 'bic' is the Bayesian Information Criterion; 'delta' is the Information Criterion differences; 'weight' is the Information Criterion weights. 'delta' and 'weight' are based on 'aic' for censored data and 'aicc' for non-censored data.
Table 2. The estimated hazardous/protective concentrations. 'HCx' is the % species affected; 'PCx' is the % species protected; 'est' is the model-averaged estimate of the concentration; 'se' is the bootstrap based standard error of the estimate; 'lcl' and 'ucl' are the bootstrapped based lower and upper 95% confidence limits; 'nboot' is the number of bootstrap samples; 'pboot' is the proportion of bootstrap samples that converged. The model-averaged estimate(s) is calculated by treating the distribution as a single weighted mixture distribution. Distributions with an absolute AIC difference greater than a default delta of 9.21 (corresponding to a weight of no more than 0.01) are excluded prior to bootstrapping.
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Goodness of fit table
Table 1. The goodness of fit statistics. 'dist' is the distribution name; 'ad' is the Anderson-Darling statistic; 'ks' is the Kolmogorov-Smirnov statistic; 'cvm' is the Cramer-von Mises statistic; 'aic' is the Akaike's Information Criterion; 'aicc' is the Akaike's Information Criterion corrected for sample size; 'bic' is the Bayesian Information Criterion; 'delta' is the Information Criterion differences; 'weight' is the Information Criterion weights. 'delta' and 'weight' are based on 'aic' for censored data and 'aicc' for non-censored data.
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Model averaged fit
Estimated hazardous/protective concentration
Table 2. The estimated hazardous/protective concentrations. 'HCx' is the % species affected; 'PCx' is the % species protected; 'est' is the model-averaged estimate of the concentration; 'se' is the bootstrap based standard error of the estimate; 'lcl' and 'ucl' are the bootstrapped based lower and upper 95% confidence limits; 'nboot' is the number of bootstrap samples; 'pboot' is the proportion of bootstrap samples that converged. The model-averaged estimate(s) is calculated by treating the distribution as a single weighted mixture distribution. Distributions with an absolute AIC difference greater than a default delta of 9.21 (corresponding to a weight of no more than 0.01) are excluded prior to bootstrapping.
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Input data