指定気圧面の観測データ（日ごとの値）
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南鳥島 1992年4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 | 1017.8 | 9 | 22.1 | 83 | 5.0 | 60 |
| 2 | 1018.4 | 9 | 21.9 | 83 | 4.0 | 60 |
| 3 | 1017.4 | 9 | 22.2 | 72 | 2.6 | 50 |
| 4 | 1015.9 | 9 | 21.3 | 79 | 1.5 | 110 |
| 5 | 1013.3 | 9 | 23.0 | 82 | 2.4 | 190 |
| 6 | 1011.7 | 9 | 24.1 | 88 | 4.3 | 240 |
| 7 | 1014.2 | 9 | 22.1 | 78 | 1.9 | 60 |
| 8 | 1018.0 | 9 | 20.4 | 69 | 9.2 | 40 |
| 9 | 1020.1 | 9 | 20.0 | 60 | 9.0 | 90 |
| 10 | 1017.9 | 9 | 21.7 | 67 | 4.2 | 110 |
| 11 | 1014.6 | 9 | 22.3 | 82 | 3.2 | 170 |
| 12 | 1012.7 | 9 | 22.9 | 92 | 4.0 | 200 |
| 13 | 1011.5 | 9 | 23.5 | 95 | 4.1 | 210 |
| 14 | 1012.9 | 9 | 22.3 | 93 | 5.3 | 250 |
| 15 | 1015.0 | 9 | 22.6 | 93 | 6.8 | 30 |
| 16 | 1015.3 | 9 | 23.5 | 91 | 6.0 | 130 |
| 17 | 1015.0 | 9 | 23.5 | 91 | 3.7 | 220 |
| 18 | 1018.4 | 9 | 21.7 | 85 | 7.0 | 50 |
| 19 | 1018.1 | 9 | 23.3 | 91 | 4.6 | 110 |
| 20 | 1015.8 | 9 | 23.1 | 94 | 1.7 | 200 |
| 21 | 1015.7 | 9 | 22.8 | 92 | 1.6 | 180 |
| 22 | 1017.3 | 9 | 23.8 | 91 | 4.9 | 110 |
| 23 | 1018.8 | 9 | 23.7 | 94 | 1.4 | 150 |
| 24 | 1020.2 | 9 | 24.6 | 87 | 1.6 | 40 |
| 25 | 1017.9 | 9 | 23.0 | 91 | 0.0 | - |
| 26 | 1015.0 | 9 | 24.0 | 81 | 1.8 | 180 |
| 27 | 1013.9 | 9 | 24.5 | 82 | 2.1 | 250 |
| 28 | 1014.5 | 9 | 24.6 | 85 | 3.0 | 220 |
| 29 | 1013.8 | 9 | 24.8 | 87 | 2.9 | 210 |
| 30 | 1014.0 | 9 | 24.6 | 89 | 2.8 | 200 |