Keyword Analysis & Research: what does e mean in natural log

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does e mean in natural log	1.76	0.5	6820	16	31
what	1.55	0.4	6269	88	4
does	0.64	1	8272	69	4
e	0.07	1	3582	80	1
mean	0.94	0.1	7117	98	4
in	2	0.1	581	87	2
natural	1.72	0.9	5903	87	7
log	1.96	0.5	988	5	3

Keyword	CPC	PCC	Volume	Score
what does e mean in natural log	1.61	0.7	9359	48