指定気圧面の観測データ（日ごとの値）
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昭和 1999年1月9時（現地時間 3時） 40hPa
| 日 | ジオポテンシャル 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|
| 1 | 21829 | -37.4 | /// | 11 | 138 |
| 2 | 21858 | -37.7 | /// | 7 | 166 |
| 3 | 21889 | -38.0 | /// | 4 | 126 |
| 4 | 21854 | -39.6 | /// | 2 | 74 |
| 5 | 21863 | -40.9 | /// | 2 | 29 |
| 6 | 21906 | -39.7 | /// | 1 | 288 |
| 7 | 21942 | -41.2 | /// | 2 | 313 |
| 8 | 21946 | -40.3 | /// | 6 | 331 |
| 9 | 21978 | -40.7 | /// | 7 | 349 |
| 10 | 21930 | -41.1 | /// | 3 | 343 |
| 11 | 21994 | -41.4 | /// | 2 | 304 |
| 12 | 22022 | -41.9 | /// | 6 | 264 |
| 13 | 22071 | -41.7 | /// | 5 | 238 |
| 14 | 22062 | -42.2 | /// | 5 | 206 |
| 15 | 22063 | -41.8 | /// | 3 | 151 |
| 16 | 22009 | -40.8 | /// | 4 | 129 |
| 17 | 21968 | -39.3 | /// | 6 | 143 |
| 18 | 21975 | -39.1 | /// | 6 | 164 |
| 19 | 21997 | -39.4 | /// | 7 | 178 |
| 20 | 21978 | -38.7 | /// | 7 | 173 |
| 21 | 21950 | -40.0 | /// | 6 | 144 |
| 22 | 21934 | -38.9 | /// | 4 | 147 |
| 23 | 21923 | -39.3 | /// | 3 | 157 |
| 24 | 21919 | -39.1 | /// | 4 | 156 |
| 25 | 21947 | -41.4 | /// | 5 | 144 |
| 26 | 21930 | -40.6 | /// | 3 | 108 |
| 27 | 21917 | -40.0 | /// | 4 | 91 |
| 28 | 21923 | -40.2 | /// | 4 | 53 |
| 29 | 21896 | -40.9 | /// | 4 | 7 |
| 30 | 21883 | -40.7 | /// | 2 | 288 |
| 31 | 21858 | -40.5 | /// | 1 | 278 |