指定気圧面の観測データ（日ごとの値）
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南大東島 2003年11月21時 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 1015.8 | 20 | 25.2 | 82 | 5.6 | 110 |
| 2 | 1016.1 | 20 | 25.4 | 84 | 4.8 | 130 |
| 3 | 1013.8 | 20 | 23.9 | 89 | 2.3 | 160 |
| 4 | 1015.5 | 20 | 25.5 | 86 | 4.8 | 100 |
| 5 | 1014.2 | 20 | 24.8 | 93 | 1.1 | 230 |
| 6 | 1014.5 | 20 | 21.8 | 96 | 0.1 | - |
| 7 | 1014.6 | 20 | 22.3 | 95 | 0.6 | 70 |
| 8 | 1014.2 | 20 | 25.0 | 90 | 2.4 | 100 |
| 9 | 1014.2 | 20 | 25.1 | 88 | 2.8 | 60 |
| 10 | 1013.4 | 20 | 23.8 | 96 | 1.4 | 120 |
| 11 | 1016.0 | 20 | 23.1 | 87 | 4.9 | 10 |
| 12 | 1017.4 | 20 | 22.5 | 60 | 5.4 | 350 |
| 13 | 1019.3 | 20 | 22.1 | 56 | 4.9 | 40 |
| 14 | 1019.2 | 20 | 24.0 | 61 | 5.9 | 90 |
| 15 | 1016.0 | 20 | 24.8 | 73 | 4.1 | 110 |
| 16 | 1015.5 | 20 | 22.6 | 100 | 0.0 | - |
| 17 | 1017.2 | 20 | 23.8 | 92 | 6.2 | 60 |
| 18 | 1015.7 | 20 | 24.2 | 85 | 6.6 | 80 |
| 19 | 1012.2 | 20 | 23.6 | 99 | 3.0 | 210 |
| 20 | 1011.2 | 20 | 24.7 | 94 | 3.5 | 210 |
| 21 | 1013.1 | 20 | 23.2 | 98 | 4.3 | 10 |
| 22 | 1018.6 | 20 | 20.3 | 83 | 5.3 | 30 |
| 23 | 1020.7 | 20 | 22.5 | 76 | 7.5 | 50 |
| 24 | 1017.5 | 20 | 23.7 | 80 | 5.7 | 70 |
| 25 | 1016.6 | 20 | 23.6 | 78 | 7.8 | 30 |
| 26 | 1014.9 | 20 | 21.9 | 75 | 3.5 | 30 |
| 27 | 1011.9 | 20 | 23.0 | 90 | 5.6 | 70 |
| 28 | 1009.7 | 20 | 24.5 | 94 | 4.8 | 60 |
| 29 | 1006.0 | 20 | 21.6 | 99 | 7.8 | 10 |
| 30 | 1001.3 | 20 | 21.1 | 97 | 11.5 | 10 |