All examples of 140 tanks, there are examples of slight turbidity. The number of tanks, 49, for example, is a clear regular. The number 91 tank (Khun) accounted for 35% of all samples.
Examples of all 140 tanks examples of turbidity is a little bit of trash 49 an example of a normal number of 91 bucket (for example turbidity), accounting for 35% of all samples