Org. C (mg·l⁻¹) contents

Org. M (mg·l⁻¹) contents

Cd (mg·l⁻¹) contents

Pb (mg·l⁻¹) contents

Years of Study

Mean

Years of Study

Mean

Years of Study

Mean

Years of Study

Mean

Months

2016

2017

(Months)

2016

2017

(Months)

2016

2017

(Months)

2016

2017

(Months)

January

0.29

0.24

0.27

0.42

0.41

0.41

0.02

0.01

0.01

0.125

1.26

1.26

February

0.32

0.27

0.30

0.47

0.51

0.49

0.01

0.07

0.04

1.38

1.32

1.35

March

0.17

0.16

0.17

0.27

0.29

0.28

0.07

0.07

0.07

1.03

1.00

1.02

April

0.26

0.5

0.25

0.33

0.25

0.29

0.10

0.04

0.07

1.08

1.06

1.07

May

0.15

0.13

0.14

0.25

0.25

0.25

0.01

0.01

0.01

1.26

1.23

1.25

June

0.25

0.22

0.24

0.36

0.32

0.34

0.02

0.02

0.02

1.20

1.21

1.24

July

0.32

0.28

030

0.56

0.40

0.46

0.01

0.01

0.01

1.31

1.39

1.31

August

0.39

0.37

0.38

0.61

0.53

0.57

0.01

0.01

0.01

1.31

1.39

1.31

September

0.37

0.27

0.32

0.56

0.55

0.55

0.01

0.01

0.01

1.08

1.05

1.07

October

0.18

0.16

0.17

0.27

0.25

0.26

0.01

0.01

0.01

1.17

1.13

1.15

November

0.31

0.22

0.27

031

0.27

0.29

0.02

0.02

0.02

1.19

1.16

1.17

December

0.31

0.26

0.28

0.30

0.31

0.31

0.02

0.04

0.03

1.09

1.22

1.16

Mean (Years)

0.28

0.28

0.39

0.36

0.03

0.03

1.17

1.18