The answer is depth and type of fluid. Type of fluid essentially means its density. Denser fluid exerts more pressure compared to less dense fluids. Additionally, the bigger the depth in the fluid, the more the pressure due to the column of the fluid above. The following formula is used to calculate this pressure of a static fluid;
Pstatic fluid = ρgh where;
ρ = m/V = fluid density
g = acceleration of gravity
h = depth of fluid
