shorts, page-14

Hi Jacko,
Thanks so much for the great chart - you're obviously a pro at Excel! I'm just learning more about shorting, and it's impact on AGO and other stocks, and I have to confess I'm not sure the difference between 'daily shorts' (the red bars), and 'short interest' (the yellow mountain graph). Is it that the red is stock that has been purchased to close out a short position (i.e. transaction completed) versus people who are holding short positions, against which they have yet to buy to conclude the transaction?
Thanks, GW