No. Each field has a certain value at each point of space time. For simplicity take the value one to indicate that there is a particle and 0 no particle.
Then the idea that at any point only one particle is possible does not exclude the existence of many different fields. And a field by...
I see.
Well, a field usually will not "occupy" space. They only assign a physical quantity to point of spacetime.
As a classical example at each point you could have a value for the temperature, humidity, wind, etc. each being a different field.
Now a quantum field will describe a certain kind...
\Phi=\frac{q}{\epsilon_0}=\frac{3.1\mu C}{8.85418782 \cdot 10^{-12} \frac{As}{Vm}}=0.35 \cdot 10^6 Vm=3.5\cdot 10^5 Vm = 3.5\cdot 10^2 kN m^2/C
I had calculated with milli Coulomb before.
No it is 3.5\cdot 10^{11} Vm = 3.5\cdot 10^8 KN m^2/C.
And from the data you gave (charges 8 mC and -4.9 mC) this is correct. I agree with sgd on that.