Table 5. Results of correlation analyses among items of exterior defect investigations.

Items	Main dam	Side wall	Apron	Correction value	Total score
Main dam	1
Side wall	0.5987***	1
Apron	0.4462***	0.3503***	1
Correction value	0.5070***	0.4286**	0.4865***	1
Total score	0.9220***	0.7086***	0.6573***	0.7421***	1

^**P<0.01,
^***P<0.001,