指定気圧面の観測データ（日ごとの値）
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石垣島 1999年12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 | 1017.1 | 7 | 22.4 | 89 | 6.7 | 80 |
| 2 | 1022.2 | 7 | 21.6 | 66 | 7.5 | 30 |
| 3 | 1026.3 | 7 | 21.6 | 59 | 5.4 | 40 |
| 4 | 1022.1 | 7 | 24.1 | 63 | 5.6 | 90 |
| 5 | 1018.5 | 7 | 23.8 | 75 | 5.6 | 90 |
| 6 | 1019.8 | 7 | 19.3 | 86 | 6.3 | 30 |
| 7 | 1023.8 | 7 | 18.8 | 58 | 5.3 | 30 |
| 8 | 1021.8 | 7 | 20.6 | 59 | 3.9 | 40 |
| 9 | 1019.4 | 7 | 21.2 | 60 | 4.8 | 30 |
| 10 | 1017.9 | 7 | 21.8 | 73 | 3.7 | 60 |
| 11 | 1020.1 | 7 | 21.7 | 71 | 4.4 | 30 |
| 12 | 1020.6 | 7 | 21.3 | 64 | 4.5 | 60 |
| 13 | 1018.3 | 7 | 21.9 | 68 | 4.1 | 60 |
| 14 | 1017.2 | 7 | 20.5 | 87 | 4.0 | 90 |
| 15 | 1018.0 | 7 | 19.8 | 84 | 5.5 | 20 |
| 16 | 1016.7 | 7 | 22.2 | 90 | 4.5 | 50 |
| 17 | 1013.0 | 7 | 20.1 | 90 | 6.1 | 30 |
| 18 | 1018.6 | 7 | 18.5 | 85 | 6.1 | 20 |
| 19 | 1021.3 | 7 | 15.6 | 87 | 7.5 | 30 |
| 20 | 1024.2 | 7 | 14.5 | 68 | 7.2 | 20 |
| 21 | 1025.1 | 7 | 14.1 | 63 | 5.6 | 20 |
| 22 | 1026.6 | 7 | 11.0 | 52 | 8.0 | 350 |
| 23 | 1024.0 | 7 | 12.9 | 66 | 3.4 | 10 |
| 24 | 1021.3 | 7 | 15.2 | 63 | 2.8 | 20 |
| 25 | 1021.2 | 7 | 13.9 | 57 | 3.2 | 30 |
| 26 | 1021.5 | 7 | 17.3 | 59 | 4.3 | 20 |
| 27 | 1023.6 | 7 | 19.6 | 64 | 4.4 | 50 |
| 28 | 1020.6 | 7 | 21.9 | 70 | 6.4 | 100 |
| 29 | 1016.5 | 7 | 20.8 | 92 | 2.6 | 80 |
| 30 | 1013.2 | 7 | 21.8 | 90 | 4.1 | 60 |
| 31 | 1016.7 | 7 | 20.2 | 75 | 2.8 | 10 |