Hey Scott!
Thanks for taking the time to put your question here, and sorry for the slow reply. I’ve created a fork of your notebook that takes a different approach to managing which chart you show (using a view as an interesting idea, but it’s tricky to conditionally show cells). It uses functions to render the charts, rather than storing them as cells.
In terms of your arquero question, I’m not sure what exactly is happening with the date parsing, but you should be able to use your data variable in Arquero without the date issue:
// Displays the season as strings
Inputs.table(aq.from(data))
Hope that helps, let me know if you have any questions!