Epidemiology factors

Weight

Class interval

Ranks

Degrees of vulnerability

API 2010

12

<7.7

7.7 - 7.8

7.8 - 7.9

7.9 - 8

>=8

1

2

3

4

5

Very low

Low

Medium

High

Very high

Pf case 2011

8

<2855

2855 - 3596

3596 - 4338

4338 - 5095

>=5095

1

2

3

4

5

Very low

Low

Medium

High

Very high