I am trying to figure out the best solution for creating a filled area chart to display a “typical range” in a time series chart, similar to this example where you are able to see the current items records on a time series while simultaneously seeing the range of other similar records in grey.
I have been using Chart.js but cannot seem to figure out a way to create a filled area chart using this plugin. If you know of a way to achieve this with the Chart.js plugin by somehow clipping the portions of an area chart below the lower bound or if there is another method let me know! Otherwise, seeking all recommendations to achieve this! 
Thanks!