| Table
09 |
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| Normal Meteorology
2009 |
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| Station: Vientiane Capital |
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| Symbol |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Tx |
27.3 |
33.0 |
32.9 |
34.0 |
32.9 |
32.6 |
31.9 |
32.6 |
32.4 |
32.5 |
30.9 |
29.6 |
31.9 |
| Tn |
15.3 |
21.1 |
22.9 |
24.9 |
24.3 |
24.5 |
24.6 |
24.5 |
24.2 |
24.1 |
19.7 |
18.2 |
22.4 |
| (Tx+Tn)/2 |
21.3 |
27.1 |
27.9 |
29.5 |
28.6 |
28.6 |
28.3 |
28.6 |
28.3 |
28.3 |
25.3 |
23.9 |
27.1 |
| Ux |
88 |
87 |
85 |
87 |
91
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93 |
95 |
94 |
94 |
93 |
87 |
92 |
90 |
| Un |
45 |
44 |
47 |
53 |
62
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64 |
67 |
64 |
64 |
59 |
47 |
48 |
55 |
| (Ux+Un)/2 |
67 |
66 |
66 |
70 |
77 |
79 |
81 |
79 |
79 |
76 |
67 |
70 |
73 |
| R |
0.0 |
1.0 |
70.4 |
223.0 |
199.5 |
159.0 |
320.7 |
160.1 |
230.9 |
110.8 |
7.0 |
0.4 |
1,482.8 |
| Sun |
276.4 |
231.9 |
208.1 |
243.0 |
223.7 |
175.4 |
136.8 |
194.7 |
197.4 |
212.1 |
276.5 |
254.7 |
2,630.7 |
| Source : Department of Meteorology and Hydrology, Water Resources
and Environment Administration |
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| Remark : |
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| (Tx+Tn)/2= Mean temperature in
oc |
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| Tx = Mean maximum temperature in oc |
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| Tn = Mean minimum temperature in oc |
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| (Ux+Un)/2
= Mean humidity of air in % |
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| Ux = Mean maximum humidity of air in % |
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| Un = Mean minimum humidity of air in % |
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| R = Total rainfall in mm |
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| Sun
= Total sunshine duration in hours |
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