If there should be a fall of rain when the Moon passes through Śravaṇa , Maghā , Anurādhā , Bharaṇī and Mūla, the quantity of subsequent rainfall will be 14 droṇas . If when through Pūrvaphālguni , the quantity will be 25 droṇas ; if when through Punarvasu , the quantity will be 20 droṇas .