Much easier now... :)
Moral -- primarily is one of "use the table, Luke!" :) Once you have a table, use the addressing modes to select data from the table as needed; don't waste time, code and memory creating all kinds of superfluous variables that are just copies of the data you already have.
There's a link at bottom of the reference page on the table data type that outlines all the myriad addressing syntax options.
Also, for data such as these, you'll want to explore groupsummary, rowfun and the general category of grouping variables and the splitapply workflow.