And on average, for an average individual, it is equal to about 6000 ML or six liters of air. So if the person wishes, they can take a very deep breath. So if I take a very deep breath, let's say I start at this point, I go all the way up to this point and at the maximum point on this curve, this is this black line right here, and the distance from the black line all the way to zero. This is the total lunk of ounce that is equaling to about 6000 air. Now let's move on to something called the vital capacity. The vital capacity is essentially this distance here.