Table 5 Average monthly effective rainfall of the Qazvin plain (mm).

From: Estimation of actual evapotranspiration and water requirements of strategic crops under different stresses

Month

Rainfall (mm)

January

30.4

February

33

March

44.9

April

40.9

May

28.1

June

3.8

July

3.2

August

5.7

September

1.1

October

20.4

November

34.9

December

35.9

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