Keyword Analysis & Research: when did the nyc subway system start

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did the nyc subway system start	0.24	0.7	8887	8	36
when	0.67	0.7	8430	82	4
did	0.63	0.5	904	34	3
the	1.15	0.5	6785	53	3
nyc	0.83	0.9	8004	43	3
subway	0.61	0.3	8809	40	6
system	0.39	0.7	8348	96	6
start	1.26	0.3	8963	84	5

Keyword	CPC	PCC	Volume	Score
when did the nyc subway system start	0.59	0.2	566	60
when did the new york subway open	0.14	0.6	1091	43
history of the nyc subway	1.25	0.7	814	97
when was new york subway system built	0.42	1	8949	55