Aquifer Vulnerability: Its Protection and Management—A Case Study in Pangkalpinang City, Indonesia

Table 12

Values of the respective classes for each method.

Classes	Index
	AVI	GOD	SINTACS	DRASTIC
High	1-2	0.5-0.7	140-210	160-199
Moderate	2-3	0.3-0.5	105-140	120-159
Low	3-4	0.1-0.3	80-105	80-119