Statistic

Total Germs/1mL

Thermotolerant Coliforms/100mL

Eschérichia coli/100mL

Faecal enterococci/100mL

A.S.R

Salmonella and Shiguela

Rainy season

Minimum

0

0

0

0

0

0

Maximum

12 × 10³

27 × 10³

7 × 10³

8.5 × 10³

2.5 × 10³

6 × 10²

Moyenne

1.3 × 10³

1.2 × 10³

7.6 × 10²

8.3 × 10²

283

96

Standard deviation

(n − 1)

2.4 × 10³

4.4 × 10³

1.5 × 10³

1.8 × 10³

506

1.4 × 10²

Dry season

Minimum

0

0

0

0

0

0

Maximum

6.8 × 10³

4 × 10⁴

6.8 × 10³

3.7 × 104

6.8 × 10³

8 × 10²

Moyenne

2.9 × 10³

7.5 × 10³

4.1 × 10²

2.2 × 10³

754

89

Standard deviation

(n − 1)

2.2 × 10³

1.2 × 10³

1.2 × 10³

6.7 × 10³

1.4 × 10³

1.4 × 10³