1961-1970

1971-1980

1981-1990

1991-2000

2001-2008

Mean water level (m)

3195.81

3194.98

3193.91

3193.46

3193.63

Rate of water level changes (cm/a)

−8.10

−14.30

−0.30

−9.50

5.30

Mean salinity (g/L)

12.49

13.13

13.28

14.26

15.89

Mean precipitation (mm)

377.04

365.13

402.11

370.93

390.43

Mean evaporation (mm)

829.97

888.08

794.68

842.99

815.56

Mean temperature (˚C)

−0.81

−0.48

−0.39

−0.07

0.46

Mean wind speed (m/s)

3.68

3.81

3.59

3.42

3.19

Climatic types

cold-dry

cold-dry

cold-wet

warm-dry

warm-wet