№ п/п

Water hardness,

mg-eqv per liter

Water alkalinity, mg-eqv per liter

Water temperature, ˚C

Coefficient of evaporation acceptable

1

4.5

4.5

40

1.516

2

6.6

6

55

1.105

3

3

3

25

1.99

4

2

2

15

2.35

5

12

3.5

40

1.53

6

8.5

2.8

52

1.47