It looks to me like those extra lines aren't plotted by that data set, most likely lines that are drawn on top of the chart?
i.e. I don't see any data on that table that would put lines where they show up on the original excel file.
Look at the original chart and see if you can select and move those lines, they might show as one group of lines, or as a part of the chart if everything is "grouped" together. just right click and ungroup to see the individual parts.
If that is the case then you can recreate the same exact thing using numbers, because you cna draw the same type of lines over a numbers chart too.
If they are plotted lines, then your data isn't coming from that table but another supporting table that has the additional lines called out. (most likely referencing back to this table for the calculations being plotted against the static lines)
Jason