Quarters (still just every 5 minutes): 1:32, 1:26, 1:32, 1:32, 1:35, 1:38, 1:38, 1:38
Average of 1:34.
And then half a mile in 3:50.

Nice improvement but probably shouldn't do quarters on consecutive runs. Mentally not so fun... Knees slowly getting better, think the extra muscle from running faster is helping. Also running faster I think may be just easier on the knees as one must be smoother.