Is that your pace throughout the course of the 5k? If so try neg splitting: take it easy for the first half, work to hold your average split for the next quarter, and then work all out for the final quarter.
In the first couple of runs it looks like you faded badly towards the end, neg splitting should give you a much better approach to pacing. Great to see progression though!! :)
edit, reading fail, although even if those are 5x1k rep times I'd still aim to keep the splits as consistent as possible throughout.
Is that your pace throughout the course of the 5k? If so try neg splitting: take it easy for the first half, work to hold your average split for the next quarter, and then work all out for the final quarter.
In the first couple of runs it looks like you faded badly towards the end, neg splitting should give you a much better approach to pacing. Great to see progression though!! :)