how much pee is there at any given moment?

how much pee is there at any given moment?
as a lower bound, we could consider just the pee that is currently inside humans. human bladder capacity is 500-700 ml, but the onset of feeling like one needs to pee happens between 200 and 350 ml. Assuming that pee accumulates at a constant rate and that pee is generally eliminated around that threshold, the average bladder is about halfway to that threshold, or somewhere between 100 and 175 ml. Multiply by ~8 billion people and there's roughly 1 billion liters of urine (or a cube ~100m on a side).
glorious. stupendous. wonderful. i am going to inflict this information on people for the rest of my days. thank you so much.