Keyword Analysis & Research: what does a1 from day 1 mean

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does a1 from day 1 mean	0.52	0.2	8170	90	28
what	1.15	0.3	5412	94	4
does	1.61	0.5	1449	52	4
a1	2	0.1	8444	29	2
from	0.12	0.8	5370	97	4
day	0.37	0.7	8341	82	3
1	1.74	0.1	4425	3	1
mean	0.75	0.4	2159	74	4

Keyword	CPC	PCC	Volume	Score
what does a1 from day 1 mean	1.64	0.2	5788	87