concave [Adjective] + surface [Noun]

Strength Strength Dispersion
A:
4
CHISQ:
134.67
AWT:
29,324,556
TTEST:
1.94
G2:
28.22
FAWT:
1.85
MI:
5.15
LOGLOG:
10.31
JD:
0.39
MI3:
9.15
DICE:
0.08
RANGE: