E13
H12![]()
=SUMPRODUCT(($A$2:$A$7=E10)*(DATEVALUE(1&$C$1:$N$1)>=DATEVALUE(1&E11))* (DATEVALUE(1&$C$1:$N$1)<=DATEVALUE(1&E12))*$C$2:$N$7)
Drag down![]()
=SUMPRODUCT(($A$2:$A$7=$H$10)*(DATEVALUE(1&$C$1:$N$1)<=DATE(2020, ROW(1:1)*3,1))*$C$2:$N$7)-SUM($H$11:H11)
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