Sabby just wrote to me and found an error in column P of the spreadsheet. I have corrected the error and reformatted the spreadsheet to make it more appealing to the eye (I hope :) ).
Please note the filters for maps 1, 17, 27, 47 and 67 do not take into account the pieces of land outside of the typical 25' x 25' grid.
I will get the revised version posted tonight.