I would like to show a simple box plot of data from 3 time points (0, 7 and 28) against abundance. I want to split the plots into treatment (i.e. CO2 level/Temperature) which will be nested within. Essentially I have 2 box plots per time point indicating the 2 different treatments. I Was going to use an overlay but because I have 2 box plots for each time point I am finding it tricky to work out the correct code.
Thanks