Class

Permeability

m/day

Transmissivity

m²/day

Specific capacity

m³/day/m

Discharge

m³/day

v. high

>864

>950

>864

>2160

high

86.4 - 864

95 - 950

86.4 - 864

432 - 2160

middle

8.64 - 86.4

9.5 - 95

8.64 - 86.4

432 - 43.2

low

<8.64

<9.5

<8.64

<43.2