Keyword Analysis & Research: what does the number 13 signify

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does the number 13 signify	1.14	0.3	564	59	31
what	0.85	0.9	997	51	4
does	1.41	0.4	9833	49	4
the	0.64	0.2	1679	20	3
number	0.74	0.2	4927	93	6
13	1.07	0.5	3053	80	2
signify	1.11	0.5	5406	22	7

Keyword	CPC	PCC	Volume	Score
what does the number 13 signify	0.81	0.1	3887	30