If you upgrade to the full featured version of the chart, you can do this very quickly as a part of the tool by simply drawing a SHR line through the space condition using the Constant Line Control tool, which is one of the many tools you get if you upgrade the basic chart. If we did that for an ASHRAE space with a SHR of .8, it looks like this.
Hopefully, at this point, you have seen that either version of the PG&E chart can be quite useful if you are working with HVAC systems and trying to understand what is going on in them. If you do that sort of thing a lot, then the professional version of the chart will probably pay for itself by streamlining your process. Plus, the professional version includes a number of very useful tools that I have not used up to this point. So, I will close by showing you a few of the ones I use the most. 2b1af7f3a8