Function for annual Swan River report plots and tables for group 3 metrics
Source:R/swan_reports.R
      ann_rep_grp3_s.Rdann_rep_grp3_s takes an export filepath, data, surface and bottom
    plot colours and produces panel plots and tables for group 3 metrics.
Details
Group 3 metrics are a grouping based on a common collection method, sample type and display parameters and in this case includes, dissolved oxygen, salinity, temperature and pH. Outputs will be exported to two folders at the outpath location. `s_panels/` for plots and `s_tables/` for data tables. These will need to be created if they don't exist.
Author
Bart Huntley, bart.huntley@dbca.wa.gov.au
For more details see https://dbca-wa.github.io/rivRmon/index.html the rivRmon website