指定気圧面の観測データ（日ごとの値）
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南鳥島 1999年7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 | 1013.6 | 9 | 30.2 | 64 | 2.5 | 100 |
| 2 | 1014.1 | 9 | 30.5 | 66 | 2.8 | 130 |
| 3 | 1015.0 | 9 | 29.7 | 68 | 1.5 | 60 |
| 4 | 1014.5 | 9 | 27.8 | 81 | 0.7 | 260 |
| 5 | 1012.9 | 9 | 29.5 | 69 | 2.5 | 350 |
| 6 | 1012.3 | 9 | 29.9 | 68 | 1.9 | 40 |
| 7 | 1011.3 | 9 | 30.6 | 64 | 4.6 | 90 |
| 8 | 1009.6 | 9 | 27.5 | 73 | 1.0 | 60 |
| 9 | 1008.6 | 9 | 29.8 | 64 | 2.5 | 130 |
| 10 | 1008.5 | 9 | 31.1 | 58 | 3.4 | 170 |
| 11 | 1010.0 | 9 | 26.0 | 88 | 2.4 | 170 |
| 12 | 1010.1 | 9 | 29.4 | 76 | 5.1 | 220 |
| 13 | 1009.7 | 9 | 26.8 | 85 | 3.2 | 260 |
| 14 | 1007.8 | 9 | 28.5 | 80 | 3.9 | 360 |
| 15 | 1005.7 | 9 | 28.0 | 83 | 5.5 | 130 |
| 16 | 1010.4 | 9 | 29.2 | 76 | 8.7 | 160 |
| 17 | 1014.1 | 9 | 29.9 | 75 | 6.4 | 140 |
| 18 | 1014.3 | 9 | 30.1 | 72 | 5.0 | 150 |
| 19 | 1014.7 | 9 | 29.9 | 70 | 4.9 | 100 |
| 20 | 1013.5 | 9 | 27.1 | 83 | 4.5 | 60 |
| 21 | 1012.6 | 9 | 29.3 | 72 | 3.6 | 100 |
| 22 | 1013.1 | 9 | 30.0 | 71 | 1.7 | 120 |
| 23 | 1013.8 | 9 | 29.9 | 72 | 1.7 | 90 |
| 24 | 1015.0 | 9 | 29.9 | 70 | 2.9 | 80 |
| 25 | 1016.3 | 9 | 29.7 | 72 | 4.8 | 100 |
| 26 | 1016.6 | 9 | 30.5 | 70 | 5.2 | 90 |
| 27 | 1014.9 | 9 | 29.8 | 72 | 5.8 | 80 |
| 28 | 1015.1 | 9 | 29.9 | 68 | 7.7 | 80 |
| 29 | 1015.0 | 9 | 29.1 | 75 | 6.5 | 90 |
| 30 | 1015.2 | 9 | 30.0 | 69 | 9.2 | 100 |
| 31 | 1014.9 | 9 | 29.7 | 71 | 9.8 | 90 |