指定気圧面の観測データ（日ごとの値）
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石垣島 1997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 | 1016.0 | 7 | 23.3 | 87 | 5.1 | 130 |
| 2 | 1015.4 | 7 | 23.8 | 88 | 3.0 | 150 |
| 3 | 1014.2 | 7 | 24.3 | 89 | 2.6 | 140 |
| 4 | 1012.4 | 7 | 24.5 | 94 | 4.5 | 170 |
| 5 | 1011.8 | 7 | 23.0 | 86 | 4.3 | 40 |
| 6 | 1014.5 | 7 | 20.6 | 71 | 3.1 | 20 |
| 7 | 1014.1 | 7 | 21.8 | 67 | 3.5 | 90 |
| 8 | 1011.8 | 7 | 24.6 | 84 | 2.5 | 170 |
| 9 | 1013.9 | 7 | 20.5 | 87 | 4.0 | 40 |
| 10 | 1016.2 | 7 | 20.1 | 87 | 5.8 | 40 |
| 11 | 1016.6 | 7 | 20.1 | 75 | 3.4 | 30 |
| 12 | 1014.3 | 7 | 22.4 | 67 | 3.3 | 90 |
| 13 | 1015.4 | 7 | 22.5 | 94 | 3.0 | 270 |
| 14 | 1011.9 | 7 | 24.3 | 86 | 2.3 | 80 |
| 15 | 1012.1 | 7 | 22.1 | 72 | 5.2 | 10 |
| 16 | 1014.6 | 7 | 22.2 | 77 | 3.1 | 50 |
| 17 | 1015.4 | 7 | 24.3 | 69 | 3.4 | 150 |
| 18 | 1014.9 | 7 | 22.9 | 90 | 3.5 | 300 |
| 19 | 1014.9 | 7 | 23.6 | 73 | 1.9 | 10 |
| 20 | 1013.6 | 7 | 24.7 | 77 | 2.8 | 110 |
| 21 | 1011.5 | 7 | 24.8 | 71 | 3.7 | 130 |
| 22 | 1015.0 | 7 | 22.7 | 69 | 3.6 | 360 |
| 23 | 1016.7 | 7 | 21.9 | 69 | 5.5 | 10 |
| 24 | 1016.4 | 7 | 22.0 | 68 | 3.7 | 20 |
| 25 | 1016.7 | 7 | 23.0 | 70 | 4.2 | 20 |
| 26 | 1016.2 | 7 | 23.7 | 77 | 1.7 | 30 |
| 27 | 1014.8 | 7 | 25.4 | 80 | 2.2 | 340 |
| 28 | 1012.7 | 7 | 25.5 | 81 | 3.0 | 60 |
| 29 | 1011.9 | 7 | 25.8 | 87 | 2.9 | 190 |
| 30 | 1012.7 | 7 | 26.4 | 84 | 2.5 | 190 |