Jotaro during the Enya fight uses his Star Platinum to absorb Enya's Justice
Justice is a living fog that surrounds all the town
And not only surrounds it, but is even an illusion that made a whole graveward look like a town
Let's start to see how much impressive this feat is.
Jotaro and friends were in Karachi.
The fight happened in December of 1988 .
The average temperature in Karachi in December is 21°C.
Why we need this informations? We'll see later.
The city that Justice created had "few thousand people" so I'll assume that there are 2000 people.
Pakistan in 1988 had the density of 126 people for km^2.
So making a short calc the area of the town is 15,87 km^2 = 15870000 m^2.
Now let's see the height of the town.
The average height for a Pakistan citizen is 1,67 m for a man and 1,54 m for a woman.
As we don't know the gender of the person that we're going to scale, I'll make the average height and we get 1,61 m.
Green line = Pakistan citizen = 29 px = 1,61 m
Red line = Tower = 566 px = 31,42 m
The town/fog volume = 31,42 m * 15870000 m^2 = 498635400 m^3
Now let's see the density of the fog
With this converter, using as temperature 21°C ,the humidity at 100% (as is a fog), elevation at 8 m we'll get the density at 1,189 kg/m^3
The fog mass in total is:
1,189 kg/m^3 * 498635400 m^3 = 592877490,6 kg
For the time, an untrained person can hold its breath for 30 seconds, and Enya seems the case.
As the town area is 15870000 m^2, assuming that is a circle, the radius is 2248.14148 m
Speed = 2248.14148 m / 30 sec = 74.94 m/s
Using the kinetic energy
0,5 * 592877490,6 kg * ( 74,94 m/s )^2 = 1,66480106e12 joule / 397.9 tons = Multi City Block (accepted)