How can you quantify how much THC is on your plant and in your plant? There has to be a way. I think it’s a mathematical equation or statistical equation. But I can’t remember!!!At one point I knew how to calculate the % of a compound in a chemical but a bird stole that memory! Is there another way? Visual examination what am I looking for? I know there’s a simple way and each strain is different of course. How was it done way back n the day????