DF 116, damper high 4. Felt pretty good, despite low mood. Back a bit tender but not too bad. Average of 24spm, with 6 min splits of 24, 25, 24, 23, 26. Went slower for a bit in penultimate 6 minutes. Pace 1:58.0 overall and 6 min splits in 1:57.9, 1 56.8, 1:57.6, 2:00.6, 1:57.1. I think I am in shape to do new 30 minutes pb.