No one gives a shit about the chart. The actual devices would serve a much better purpose.
A lot of knowledge on one poster about VPD. This will help out the new grower, By getting the room dialed in more. Back in the day this info was really only known by Pro grower. Pulse's chart is better than most out there. Way more info than other by far. The poster idea is great the grow can hang it right in the garden. Great Job guys