undergravel [Noun] + filtration [Noun]

Strength Strength Dispersion
A:
35
CHISQ:
72,811.26
AWT:
30,879,000
TTEST:
5.91
G2:
491.36
FAWT:
1.76
MI:
11.02
LOGLOG:
56.54
JD:
0.43
MI3:
21.28
DICE:
13.73
RANGE: