Keyword Analysis & Research: what does the number 13 mean

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does the number 13 mean	0.35	0.9	2059	21	28
what	0.92	1	1004	50	4
does	0.21	0.1	1849	2	4
the	0.98	0.9	4599	47	3
number	0.2	0.8	425	60	6
13	1.42	0.5	2666	42	2
mean	1.91	0.2	8385	66	4

Keyword	CPC	PCC	Volume	Score
what does the number 13 mean	1.82	0.3	7776	42