指定気圧面の観測データ（日ごとの値）
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昭和 1999年11月21時（現地時間 15時） 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 975.0 | 21 | -14.4 | 65 | 2.2 | 10 |
| 2 | 980.8 | 21 | -9.0 | 66 | 5.4 | 30 |
| 3 | 974.0 | 21 | -3.8 | 94 | 25.2 | 50 |
| 4 | 974.6 | 21 | -1.5 | 93 | 20.8 | 40 |
| 5 | 986.7 | 21 | -2.0 | 87 | 1.3 | 60 |
| 6 | 986.4 | 21 | -0.3 | 67 | 10.2 | 70 |
| 7 | 999.5 | 21 | -0.6 | 69 | 1.2 | 330 |
| 8 | 997.8 | 21 | -3.0 | 48 | 3.4 | 170 |
| 9 | 984.4 | 21 | -1.7 | 54 | 5.1 | 20 |
| 10 | 985.9 | 21 | -6.8 | 42 | 1.3 | 60 |
| 11 | 985.1 | 21 | -7.5 | 42 | 3.7 | 210 |
| 12 | 984.2 | 21 | -7.5 | 57 | 2.7 | 60 |
| 13 | 978.5 | 21 | -7.0 | 52 | 3.1 | 270 |
| 14 | 980.7 | 21 | -9.2 | 67 | 5.3 | 30 |
| 15 | 978.1 | 21 | -5.0 | 78 | 1.9 | 170 |
| 16 | 978.5 | 21 | -3.8 | 58 | 3.2 | 30 |
| 17 | 977.2 | 21 | -3.7 | 60 | 2.7 | 20 |
| 18 | 985.9 | 21 | -4.6 | 67 | 4.4 | 180 |
| 19 | 974.4 | 21 | -3.6 | 43 | 1.7 | 360 |
| 20 | 971.9 | 21 | -5.2 | 51 | 3.0 | 360 |
| 21 | 977.8 | 21 | -5.3 | 51 | 3.1 | 160 |
| 22 | 982.2 | 21 | -5.0 | 57 | 2.1 | 210 |
| 23 | 981.8 | 21 | -5.4 | 57 | 4.7 | 30 |
| 24 | 984.1 | 21 | -4.5 | 70 | 2.4 | 300 |
| 25 | 987.7 | 21 | -5.7 | 67 | 2.0 | 30 |
| 26 | 979.5 | 21 | -6.1 | 56 | 3.9 | 190 |
| 27 | 985.5 | 21 | -7.6 | 80 | 4.3 | 20 |
| 28 | 984.3 | 21 | -6.4 | 61 | 2.2 | 20 |
| 29 | 977.0 | 21 | -8.4 | 74 | 3.7 | 350 |
| 30 | 970.4 | 21 | -7.4 | 72 | 12.9 | 40 |