指定気圧面の観測データ（日ごとの値）
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南鳥島 2019年6月9時 300hPa
| 日 | ジオポテンシャル 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|
| 1 | 9673 | -33.4 | 59 | 8 | 299 |
| 2 | 9692 | -33.2 | 12 | 10 | 7 |
| 3 | 9712 | -30.6 | 13 | 21 | 50 |
| 4 | 9738 | -31.1 | 33 | 7 | 13 |
| 5 | 9735 | -30.4 | 33 | 6 | 72 |
| 6 | 9708 | -31.9 | 70 | 14 | 203 |
| 7 | 9703 | -32.4 | 49 | 6 | 58 |
| 8 | 9717 | -31.5 | 23 | 9 | 73 |
| 9 | 9695 | -33.5 | 32 | 5 | 316 |
| 10 | 9698 | -31.2 | 19 | 8 | 345 |
| 11 | 9742 | -30.5 | 34 | 10 | 290 |
| 12 | 9757 | -30.9 | 49 | 6 | 317 |
| 13 | 9768 | -29.0 | 26 | 3 | 346 |
| 14 | 9750 | -28.6 | 18 | 10 | 342 |
| 15 | 9747 | -28.7 | 81 | 11 | 350 |
| 16 | 9765 | -28.8 | 35 | 11 | 33 |
| 17 | 9773 | -29.4 | 38 | 13 | 56 |
| 18 | 9749 | -31.2 | 13 | 14 | 102 |
| 19 | 9713 | -31.1 | 21 | 7 | 181 |
| 20 | 9743 | -31.3 | 45 | 20 | 186 |
| 21 | 9747 | -31.0 | 11 | 16 | 152 |
| 22 | 9746 | -31.4 | 10 | 9 | 131 |
| 23 | 9763 | -31.2 | 7 | 4 | 167 |
| 24 | 9788 | -32.5 | 20 | 13 | 121 |
| 25 | 9791 | -31.1 | 16 | 11 | 116 |
| 26 | 9758 | -31.7 | 17 | 1 | 181 |
| 27 | 9691 | -31.9 | 85 | 15 | 275 |
| 28 | 9652 | -33.7 | 5 | 23 | 4 |
| 29 | 9703 | -31.6 | 36 | 12 | 14 |
| 30 | 9701 | -31.9 | 55 | 3 | 338 |