A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
The 1st step is to correct the data:
After that we can use simple COUNTIFS or SUMIFS formulas:
C27: =COUNTIFS('Data 1.'!B:B,B27,'Data 1.'!E:E,">="&$C$23,'Data 1.'!F:F,"<="&$C$24)
Sample file: https://1drv.ms/x/s!AsEpmlJLteasji2tf-MdqzVM69aT?e=d5zVlL
Andreas.