You can still put the most recent data on the right, and zoom in to show the rightmost data points. This is an established practice in stock charts and works well.

Thanks, I always open this on my mobile phone or vertical monitor, and on the previous version (the google sheet direct link), always had to scroll right, which was annoying.

I saw it before and like it this way better.

Anyway graphs would be nice eventually but the heatmap works pretty well.

Thanks for doing this. It's a very interesting perspective into the impact this is having.

Have it by default show the rightmost portion, so that people can scroll to the left if they want? This is how Yahoo Finance shows a stock chart.

Start with it scrolled to the right?

Then don't put long data in a horizontal scrollbar. It's the worst possible UX ever.

People (in this language) read from left to right, so they're used to what is on the left coming before what is on the right. If you have a time series that keeps growing, trim or scale it to the display size, or change the sample rate, or give some UI options to let them vary those parameters. Don't ask people to invert their expectation of "before" and "after". Those are too fundamental.

...what?

The use of saturation of the background of the cell to indicate the severity makes it a combination of heatmap and table. Given the number of series in the data, this is actually probably a superior view of the data than trying to plot all the time series in a single line graph (it's dangerous to push beyond 6, IMHO), or devoting a single line graph to each comparison point.

Tables are a vastly underrated means of conveying data.