Keyword Analysis & Research: what does till date mean

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does till date mean	0.55	0.6	7318	69	24
what	0.76	0.7	5451	11	4
does	1.28	1	1365	6	4
till	1.49	0.7	4967	99	4
date	1.98	0.9	1823	37	4
mean	1.03	0.9	5026	38	4

Keyword	CPC	PCC	Volume	Score
what does till date mean	1.35	0.9	8545	28