Permeability tests were carried out on the samples collected from two different layers as shown in the figure (not drawn to the scale). The relevant horizontal $(k_h)$ and vertical $(k_v)$ coefficients of permeability are indicated for each layer.
The ratio of the equivalent horizontal to vertical coefficients of permeability, is
- $37.29$
- $80.20$
- $68.25$
- $0.03$