Stations and seasons

${\text{NH}}_4^{+}$ (mg/L)

${\text{NO}}_2^{-}$ (µg/L)

${\text{PO}}_4^{3-}$ (µg/L)

Mean of category

Mean

Category

Mean

Category

Mean

Category

Nz₁

SRS

0.49

4

62

2

1173

1

2.33

SDS

0.37

4

12.67

3

1647

1

2.67

Nz₂

SRS

0.42

4

23.33

2

697

2

2.67

SDS

0.88

4

15

3

3273

1

2.67

Av₁

SRS

0.38

4

51.33

2

853

2

2.67

SDS

0.34

4

5.67

5

2933

1

3.33

Av₂

SRS

0.5

4

42.33

2

777

2

2.67

SDS

0.36

4

8

4

763

2

3.33

Av₃

SRS

0.37

4

68

2

1237

1

2.33

SDS

0.27

4

5.67

5

2740

1

3.33

Os₁

SRS

0.61

4

95.33

2

1553

1

2.33

SDS

0.36

4

0

5

2007

1

3.33

Os₂

SRS

0.34

4

95.67

2

350

2

2.67

SDS

0.51

4

13.67

3

1943

1

2.67