指定気圧面の観測データ（日ごとの値）
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南大東島 1999年6月9時 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 1007.6 | 20 | 25.0 | 81 | 7.0 | 60 |
| 2 | 1005.2 | 20 | 26.7 | 78 | 5.2 | 80 |
| 3 | 1003.5 | 20 | 26.8 | 82 | 1.9 | 160 |
| 4 | 1004.1 | 20 | 27.7 | 81 | 1.5 | 20 |
| 5 | 1006.5 | 20 | 28.8 | 81 | 5.9 | 140 |
| 6 | 1010.4 | 20 | 28.5 | 84 | 4.0 | 170 |
| 7 | 1010.1 | 20 | 29.1 | 83 | 4.6 | 170 |
| 8 | 1009.4 | 20 | 27.8 | 87 | 5.1 | 210 |
| 9 | 1009.4 | 20 | 28.1 | 84 | 4.5 | 230 |
| 10 | 1008.2 | 20 | 27.4 | 88 | 2.8 | 290 |
| 11 | 1006.2 | 20 | 27.9 | 80 | 6.1 | 230 |
| 12 | 1007.8 | 20 | 27.9 | 83 | 3.4 | 200 |
| 13 | 1007.0 | 20 | 26.2 | 90 | 3.6 | 230 |
| 14 | 1007.3 | 20 | 23.8 | 90 | 4.9 | 190 |
| 15 | 1009.7 | 20 | 28.1 | 82 | 4.9 | 180 |
| 16 | 1010.4 | 20 | 28.5 | 81 | 3.1 | 160 |
| 17 | 1009.3 | 20 | 28.9 | 81 | 4.8 | 190 |
| 18 | 1009.7 | 20 | 29.5 | 79 | 4.9 | 190 |
| 19 | 1010.0 | 20 | 29.1 | 81 | 5.5 | 180 |
| 20 | 1008.9 | 20 | 28.1 | 80 | 3.8 | 240 |
| 21 | 1009.5 | 20 | 28.0 | 83 | 3.9 | 210 |
| 22 | 1010.6 | 20 | 29.3 | 81 | 3.4 | 190 |
| 23 | 1010.1 | 20 | 29.0 | 79 | 2.3 | 210 |
| 24 | 1009.4 | 20 | 29.5 | 79 | 3.0 | 210 |
| 25 | 1009.5 | 20 | 29.7 | 79 | 4.9 | 170 |
| 26 | 1010.7 | 20 | 28.9 | 82 | 2.8 | 150 |
| 27 | 1010.9 | 20 | 29.3 | 79 | 4.1 | 190 |
| 28 | 1010.1 | 20 | 28.9 | 78 | 3.6 | 210 |
| 29 | 1009.3 | 20 | 29.6 | 80 | 3.6 | 160 |
| 30 | 1008.8 | 20 | 29.0 | 80 | 2.9 | 200 |