指定気圧面の観測データ（日ごとの値）
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昭和 1999年10月9時（現地時間 3時） 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 979.7 | 21 | -18.8 | 63 | 4.0 | 50 |
| 2 | 981.8 | 21 | -20.3 | 62 | 9.3 | 50 |
| 3 | 966.5 | 21 | -15.6 | 84 | 8.4 | 30 |
| 4 | 980.9 | 21 | -21.7 | 74 | 3.6 | 160 |
| 5 | 971.2 | 21 | -22.7 | 62 | 1.8 | 60 |
| 6 | 938.0 | 21 | -11.3 | 88 | 25.0 | 70 |
| 7 | 965.3 | 21 | -14.4 | 84 | 14.5 | 70 |
| 8 | 975.1 | 21 | -21.0 | 62 | 1.8 | 50 |
| 9 | 975.8 | 21 | -15.4 | 56 | 6.3 | 30 |
| 10 | 967.5 | 21 | -11.7 | 71 | 13.8 | 70 |
| 11 | 977.8 | 21 | -15.8 | 70 | 0.3 | 220 |
| 12 | 970.2 | 21 | -19.1 | 81 | 3.7 | 220 |
| 13 | 971.6 | 21 | -17.4 | 71 | 4.8 | 30 |
| 14 | 973.8 | 21 | -20.5 | 50 | 1.2 | 80 |
| 15 | 971.2 | 21 | -17.9 | 49 | 4.8 | 40 |
| 16 | 971.2 | 21 | -20.4 | 77 | 1.5 | 80 |
| 17 | 974.9 | 21 | -22.4 | 66 | 2.8 | 340 |
| 18 | 976.9 | 21 | -11.4 | 40 | 2.8 | 150 |
| 19 | 991.1 | 21 | -16.9 | 60 | 11.8 | 90 |
| 20 | 988.3 | 21 | -14.6 | 48 | 9.3 | 70 |
| 21 | 975.3 | 21 | -17.3 | 50 | 3.2 | 20 |
| 22 | 964.1 | 21 | -13.9 | 52 | 14.8 | 80 |
| 23 | 978.0 | 21 | -11.4 | 66 | 1.3 | 60 |
| 24 | 978.2 | 21 | -17.4 | 67 | 1.0 | 120 |
| 25 | 977.2 | 21 | -15.9 | 44 | 1.4 | 40 |
| 26 | 971.5 | 21 | -14.9 | 53 | 7.4 | 70 |
| 27 | 965.9 | 21 | -10.9 | 77 | 3.2 | 150 |
| 28 | 970.5 | 21 | -9.1 | 69 | 14.1 | 60 |
| 29 | 958.2 | 21 | -14.4 | 74 | 3.6 | 170 |
| 30 | 973.1 | 21 | -9.9 | 76 | 4.6 | 40 |
| 31 | 977.0 | 21 | -13.0 | 87 | 1.5 | 260 |