Trim and lowers? I now have a big QT jar of coconut oil, 4 oz trim to 4 cups oil. Same for tincture, but 3 oz trim to 2 oz tincture. Usually I just made butter for brownies or something. Magical butter machine got all mine lol. But I've smoked trim, lowers(now I vape instead), bud has too much value, I hardly ever actually consume any bud myself lol.
Grams per square meter is the most common measurement of yield per space. Take your yield in grams, divide by the square meters of your space and that's your grams/m2.
Ex
800gram yield from a 3'x3'
9 sq ft / 10.7 sq ft per square meter = 0.84 m2
800/ 0.84 = 952g/m2
A killer yield. To achieve this most people would need lots of light, lots of nutes. Probably side lighting, or under lighting needed to consistency hit numbers like that. (More light on top doss not scale directly to more yield)
500g/m2 is a "good" grow for most if you properly fill your space. Some people have a 4'x4' but grow something like a single big pounder in it. Great for competition plants, huge waste of space. (300g/m2)
My numbers sway upwards because of perpetual also. If you've noticed, I have 32 sq ft now, and I give 1 plant 1 sq ft to flower under. But because of seedlings and veg pots crammed together, I actually have 42 plants in 32sq ft, so overall 3/4 of a square foot per plant. 14 plants fit per 10.7sq ft technically, so 50grams per plant becomes 700g/m2 like this. If I actually planted one per square foot at once, I'd have 10 less plants in the space, a pound less bud to yield.
To better maximize your space if you want to keep growing 4 medium sized plants rather than SoG, plant one per ~2weeks. When there small and don't require that much light, cram them in the corners, etc. You should turn 4 plants at a time into 6-8 at a time and be able get the same yields per plant. (Look at how tang does it too, 3 x 75w lights and 3 plants, shares a light for 2 smaller vegging plants, then when they're full bloom he's got 2 lights sitting on one plant. He's able to yield much more overall like this then if he just grew 3 plants at once with a single light on each)
It's the same concept as photoperiods growers having a separate veg space. More plants usually crammed in, less light overall given to them, etc. But applying that to a single tent perpetual.