Rainfall analysis results using RVA and HAF indices for Mekong stations
| Month | Target range (mm) | Observed frequency (%) | HAF factor | Alteration level | MWUp -value | Significance |
|---|---|---|---|---|---|---|
| Luang Prabang | ||||||
| Feb | 0.0–20.0 | 88.9 | +0.78 | High | 0.513 | Not sig. |
| Mar | 24.0–89.0 | 77.8 | +0.56 | Moderate | 0.288 | Not sig. |
| Apr | 51.0–140.0 | 66.7 | +0.33 | Moderate | 0.567 | Not sig. |
| Aug | 259.0–322.0 | 11.1 | −0.78 | High | 0.806 | Not sig. |
| Sep | 161.0–256.0 | 33.3 | −0.33 | Moderate | 0.567 | Not sig. |
| Oct | 50.0–166.0 | 77.8 | +0.56 | Moderate | 0.934 | Not sig. |
| Kratie | ||||||
| Apr | 90.8–140.3 | 12.5 | −0.75 | High | 0.292 | Not sig. |
| May | 100.0–194.0 | 37.5 | −0.25 | Low | 0.866 | Not sig. |
| Aug | 273.0–375.0 | 12.5 | −0.75 | High | 0.131 | Not sig. |
| Sep | 283.5–385.5 | 37.5 | −0.25 | Low | 0.737 | Not sig. |
| Oct | 154.0–195.5 | 20.0 | −0.6 | Moderate | 0.635 | Not sig. |
| Pakse | ||||||
| Feb | 0.0–2.0 | 88.9 | +0.78 | High | 0.369 | Not sig. |
| Mar | 10.0–71.0 | 11.1 | −0.78 | High | 0.001 | Significant |
| Apr | 23.0–67.0 | 55.6 | +0.11 | Low | 0.806 | Not sig. |
| Aug | 385.0–691.0 | 44.4 | −0.11 | Low | 0.165 | Not sig. |
| Sep | 236.0–388.0 | 11.1 | −0.78 | High | 0.414 | Not sig. |
| Oct | 51.0–206.0 | 55.6 | +0.11 | Low | 0.462 | Not sig. |
| Tan Chau | ||||||
| Feb | 0.0–5.0 | 66.7 | +0.33 | Moderate | 0.183 | Not sig. |
| Mar | 0.0–37.0 | 86.7 | +0.73 | High | 0.405 | Not sig. |
| Apr | 40.0–120.0 | 46.7 | −0.07 | Low | 0.579 | Not sig. |
| Aug | 118.0–200.0 | 40.0 | −0.20 | Low | 0.267 | Not sig. |
| Sep | 150.0–240.0 | 60.0 | +0.20 | Low | 0.541 | Not sig. |
| Oct | 251.0–318.0 | 33.3 | −0.33 | Moderate | 0.244 | Not sig. |
| Month | Target range (mm) | Observed frequency (%) | Alteration level | Significance | ||
|---|---|---|---|---|---|---|
| Feb | 0.0–20.0 | 88.9 | +0.78 | High | 0.513 | Not sig. |
| Mar | 24.0–89.0 | 77.8 | +0.56 | Moderate | 0.288 | Not sig. |
| Apr | 51.0–140.0 | 66.7 | +0.33 | Moderate | 0.567 | Not sig. |
| Aug | 259.0–322.0 | 11.1 | −0.78 | High | 0.806 | Not sig. |
| Sep | 161.0–256.0 | 33.3 | −0.33 | Moderate | 0.567 | Not sig. |
| Oct | 50.0–166.0 | 77.8 | +0.56 | Moderate | 0.934 | Not sig. |
| Apr | 90.8–140.3 | 12.5 | −0.75 | High | 0.292 | Not sig. |
| May | 100.0–194.0 | 37.5 | −0.25 | Low | 0.866 | Not sig. |
| Aug | 273.0–375.0 | 12.5 | −0.75 | High | 0.131 | Not sig. |
| Sep | 283.5–385.5 | 37.5 | −0.25 | Low | 0.737 | Not sig. |
| Oct | 154.0–195.5 | 20.0 | −0.6 | Moderate | 0.635 | Not sig. |
| Feb | 0.0–2.0 | 88.9 | +0.78 | High | 0.369 | Not sig. |
| Mar | 10.0–71.0 | 11.1 | −0.78 | High | 0.001 | Significant |
| Apr | 23.0–67.0 | 55.6 | +0.11 | Low | 0.806 | Not sig. |
| Aug | 385.0–691.0 | 44.4 | −0.11 | Low | 0.165 | Not sig. |
| Sep | 236.0–388.0 | 11.1 | −0.78 | High | 0.414 | Not sig. |
| Oct | 51.0–206.0 | 55.6 | +0.11 | Low | 0.462 | Not sig. |
| Feb | 0.0–5.0 | 66.7 | +0.33 | Moderate | 0.183 | Not sig. |
| Mar | 0.0–37.0 | 86.7 | +0.73 | High | 0.405 | Not sig. |
| Apr | 40.0–120.0 | 46.7 | −0.07 | Low | 0.579 | Not sig. |
| Aug | 118.0–200.0 | 40.0 | −0.20 | Low | 0.267 | Not sig. |
| Sep | 150.0–240.0 | 60.0 | +0.20 | Low | 0.541 | Not sig. |
| Oct | 251.0–318.0 | 33.3 | −0.33 | Moderate | 0.244 | Not sig. |
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