Keyword Analysis & Research: when did knob and tube wiring start

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did knob and tube wiring start	1.56	0.3	6479	93	35
when	0.34	0.3	6982	21	4
did	0.15	0.3	1391	73	3
knob	0.09	0.9	8804	28	4
and	0.53	0.6	3795	80	3
tube	0.47	0.7	3327	24	4
wiring	0.04	0.2	7973	61	6
start	0.56	0.1	9530	100	5

Keyword	CPC	PCC	Volume	Score
when did knob and tube wiring start	1.36	0.9	1554	99