Nitrogen (N) (mg·l⁻¹) contents

Phosphorus (P) (mg·l⁻¹) contents

Potassium (K) (mg·l⁻¹) contents

Years of Study

Mean

Years of Study

Mean

Years of Study

Mean

Months

2016

2017

(Months)

2016

2017

(Months)

2016

2017

(Months)

January

1.51

1.46

1.49

0.19

0.17

0.18

0.64

0.66

0.65

February

1.47

1.51

1.49

0.16

0.17

0.17

0.61

0.64

0.62

March

1.28

1.25

1.27

0.20

0.10

0.19

0.72

0.71

0.73

April

1.31

1.30

1.31

0.18

0.16

0.17

0.72

0.71

0.71

May

1.40

1.34

1.37

0.17

0.17

0.17

0.73

0.65

0.69

June

1.40

1.43

1.42

0.17

0.18

0.18

0.73

0.71

0.72

July

1.41

1.44

1.43

0.18

0.18

0.18

0.64

0.64

0.64

August

1.39

1.41

1.40

0.18

0.19

0.19

0.70

0.65

0.68

September

1.38

1.41

1.39

0.18

0.20

0.19

0.62

0.61

0.61

October

1.47

1.46

1.47

0.18

0.18

0.18

0.63

0.70

0.67

November

1.44

1.46

1.45

0.18

0.18

0.18

0.73

0.72

0.72

December

1.47

1.46

1.47

0.21

0.16

0.18

0.68

0.73

0.71

Mean (Years)

1.41

1.41

0.18

0.18

0.68

0.68