A
+25 Attapeu
+25
B
+22 Bokeo Province
+22
+23 Bolikhamsai Province
+23
C
+23 Champasak Province
+23
H
+14 Houaphanh Province
+14
K
+11 Khammouane Province
+11
L
+18 Luang Namtha
+18
+22 Luang Phrabang
+22
O
+20 Oudomxay Province
+20
P
+12 Phongsaly
+12
S
+23 Sainyabuli
+23
+24 Salavan
+24
S
+21 Savannakhet
+21
+23 Sekong
+23
V
+16 Vientiane (airport)
+16
+21 Vientiane Province
+21
X
+17 Xiangkhouang Province
+17