I have scanned a table from a journal and imported it into Calc. I have copied the particular column I am interested in to another Calc column and have cleaned it both of scanning mistakes and of symbols other than numbers. But when I try to use Data-Sort to put the column in numeric order a/ it is done in two distinct parts with ordering independent of each other b/ all the values for -0.02 in each part are shown out of order. There is a bar shown between the two parts that I can't get rid of.
I have tried copying the numbers into two or three different columns, and exporting the spreadsheet into Microsoft; none of that made a difference.