Update 2020 - New figures

[steffilazerte]

Hi @jeromerobles, I've got a draft version of the new annual plots in rcaaqs (plot_caaqs()), I've included a couple of examples here for reference.

A couple of questions:

• Is the legend placement okay?
• How are the colours?
• Right now I include averages based on only 2/3 years but they are distinguished with an * (also the label still reflects the three year range) - Is this okay?
• I've padded/limited the year range so all stations have the same plot, some are just missing data
  • Is this okay?
  • I've limited data to start in 2013 (ie. 2011-2013), would a different start year be better?

[jeromerobles]

@steffilazerte 2011-2013 is the start year to have a 3-year average. Legend placement looks great, Can you have the 2015 CAAQS line and red fill from appear from 2011-2013 until 2017-2019, and then the 2020 CAAQS on 2018-2020? Note that the 2015 CAAQS is 24-hour metric of 28 µg/m3 and annual of 10 µg/m3 applies before the 2018-2020 reporting period