infrastructural [Adjective] + improvement [Noun]

Strength Strength Dispersion
A:
5
CHISQ:
210.84
AWT:
22,818,675
TTEST:
2.19
G2:
35.98
FAWT:
2.38
MI:
5.46
LOGLOG:
12.68
JD:
0.4
MI3:
10.11
DICE:
0.15
RANGE: