What does GUAN stand for?

GUAN stands for "GCOS Upper-Air Network"

How to abbreviate "GCOS Upper-Air Network"?

"GCOS Upper-Air Network" can be abbreviated as GUAN

What is the meaning of GUAN abbreviation?

The meaning of GUAN abbreviation is "GCOS Upper-Air Network"

What does GUAN mean?

GUAN as abbreviation means "GCOS Upper-Air Network"