指定気圧面の観測データ（日ごとの値）
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八丈島 1991年8月3時 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 993.3 | 153 | /// | /// | 7.0 | 250 |
| 2 | 991.4 | 153 | /// | /// | 3.0 | 290 |
| 3 | 988.8 | 153 | /// | /// | 3.0 | 300 |
| 4 | 984.9 | 153 | /// | /// | 3.0 | 290 |
| 5 | 986.1 | 153 | /// | /// | 5.0 | 50 |
| 6 | 988.9 | 153 | /// | /// | 7.0 | 40 |
| 7 | 985.9 | 153 | /// | /// | 2.0 | 240 |
| 8 | 984.1 | 153 | /// | /// | 3.0 | 250 |
| 9 | 987.3 | 153 | /// | /// | 3.0 | 270 |
| 10 | 990.3 | 153 | /// | /// | 2.0 | 310 |
| 11 | 990.4 | 153 | /// | /// | 3.0 | 130 |
| 12 | 989.6 | 153 | /// | /// | 2.0 | 260 |
| 13 | 990.6 | 153 | /// | /// | 1.0 | 290 |
| 14 | 990.7 | 153 | /// | /// | 4.0 | 20 |
| 15 | 991.5 | 153 | /// | /// | 8.0 | 30 |
| 16 | 990.9 | 153 | /// | /// | 6.0 | 40 |
| 17 | 990.3 | 153 | /// | /// | 6.0 | 40 |
| 18 | 989.2 | 153 | /// | /// | 8.0 | 30 |
| 19 | 988.0 | 153 | 24.9 | 97 | 7.0 | 50 |
| 20 | 985.0 | 153 | /// | /// | 8.0 | 80 |
| 21 | 984.7 | 153 | /// | /// | 1.0 | 120 |
| 22 | 985.2 | 153 | /// | /// | 2.0 | 180 |
| 23 | 983.1 | 153 | /// | /// | 1.0 | 260 |
| 24 | 983.3 | 153 | /// | /// | 4.0 | 30 |
| 25 | 987.7 | 153 | /// | /// | 8.0 | 30 |
| 26 | 988.4 | 153 | /// | /// | 4.0 | 10 |
| 27 | 989.8 | 153 | /// | /// | 5.0 | 30 |
| 28 | 996.0 | 153 | /// | /// | 7.0 | 50 |
| 29 | 995.3 | 153 | /// | /// | 1.0 | 40 |
| 30 | 992.7 | 153 | /// | /// | 4.0 | 200 |
| 31 | 985.5 | 153 | 25.9 | 97 | 10.0 | 200 |