DV, M & WP
I am not an ayleur* (grr), but I tried anyway. Can't think of anything that makes sense for the first 3, but I bet the last 2 stand for weather permitting.

*For new people: ayleur is a word-acronym coined by someone who was here some time ago. Anything You Like Except Unanimous. He added the r because he thought it sounded more like a word that way.