SURVEY BLDEPTH-COMMENTS 
  
105 =========== Michael Stringfellow *AT* Lake Pleasant, Peoria, AZ 
A more useful parameter in mountainous terrain.  Maybe a better option would be thermal height tops above AGL.
107 =========== ---------- *AT* Ames, IA 
Compared with BL height and Cloudbase
166 =========== James Gaar *AT* Ottawa, KS 
not tested
261 =========== ---------- *AT* Truckee/Minden 
What is,is.
293 =========== Bob Gibbons *AT* Caddo Mills, TX 
Based on past 6 months
397 =========== Dan Shoemaker *AT* Caddo Mills, TX 
I prefer the H/Crit, so don't usually look at this.
411 =========== ---------- *AT* Brokenstraw P-15,  Youngsville, PA 
I have never used this.
486 =========== Martin Hellman *AT* Hayward, CA 
Ditto.
489 =========== ---------- *AT* Mountain Valley Airport, Tehachapi, CA 
Use for choosing routes.
517 =========== Mike Parker *AT* El Tiro Gliderport Tucson, AZ 
Often could not correlate this with the boundary layer minus terrain altitude (which I thought was BL depth).  So maybe I didn't understand it.