The monthly water chart of a specific basin is given for a specific year. The area of the basin is (100+2a) km² and the limit soil moisture is (150-a) mm. Fill the blanks in the chart and calculate the monthly runoff volumes (The soil moisture at the beginning of the water year is assumed to be 0). (i.e.: 65170016: a=16.

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N D Ja F Mr Ap Мy 100 Ag Jn JI S Up (mm) P (mm) F (mm) Z (mm) Ua (mm) R (mm) V (m³) 70 40 25 18 27 46 71 129 388 135 90 80+a 96 85+a 67 60+a 84 36+a 56 42 34 22 10+a N D Ja F Mr Ap Мy 100 Ag Jn JI S Up (mm) P (mm) F (mm) Z (mm) Ua (mm) R (mm) V (m³) 70 40 25 18 27 46 71 129 388 135 90 80+a 96 85+a 67 60+a 84 36+a 56 42 34 22 10+a