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

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.