指定気圧面の観測データ（日ごとの値）
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秋田 2004年11月21時 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 1005.2 | 7 | 17.1 | 89 | 3.3 | 140 |
| 2 | 1012.1 | 7 | 14.9 | 92 | 2.4 | 120 |
| 3 | 1013.9 | 7 | 13.2 | 91 | 5.1 | 160 |
| 4 | 1018.5 | 7 | 13.9 | 57 | 7.7 | 270 |
| 5 | 1020.4 | 7 | 11.6 | 87 | 1.4 | 120 |
| 6 | 1017.4 | 7 | 13.7 | 92 | 0.4 | 340 |
| 7 | 1027.6 | 7 | 7.1 | 76 | 2.0 | 90 |
| 8 | 1025.0 | 7 | 11.2 | 75 | 3.6 | 120 |
| 9 | 1028.7 | 7 | 11.7 | 94 | 2.2 | 130 |
| 10 | 1025.2 | 7 | 14.8 | 73 | 4.0 | 130 |
| 11 | 1012.6 | 7 | 14.6 | 89 | 3.4 | 130 |
| 12 | 1011.3 | 7 | 12.6 | 64 | 10.0 | 290 |
| 13 | 1023.2 | 7 | 7.6 | 67 | 2.8 | 70 |
| 14 | 1016.1 | 7 | 8.5 | 71 | 3.1 | 130 |
| 15 | 1009.3 | 7 | 9.0 | 56 | 9.7 | 290 |
| 16 | 1019.2 | 7 | 9.8 | 43 | 8.7 | 280 |
| 17 | 1024.0 | 7 | 10.6 | 73 | 3.6 | 360 |
| 18 | 1022.4 | 7 | 10.8 | 80 | 3.6 | 130 |
| 19 | 1014.8 | 7 | 8.2 | 97 | 2.5 | 130 |
| 20 | 1013.9 | 7 | 12.4 | 53 | 6.7 | 280 |
| 21 | 1018.6 | 7 | 6.9 | 81 | 1.1 | 130 |
| 22 | 1025.2 | 7 | 9.9 | 76 | 2.7 | 120 |
| 23 | 1026.6 | 7 | 15.5 | 66 | 7.1 | 240 |
| 24 | 1026.7 | 7 | 12.3 | 44 | 6.5 | 310 |
| 25 | 1027.4 | 7 | 9.5 | 52 | 6.2 | 290 |
| 26 | 1001.0 | 7 | 11.2 | 64 | 6.1 | 130 |
| 27 | 1012.2 | 7 | 9.0 | 51 | 12.3 | 310 |
| 28 | 1017.3 | 7 | 6.4 | 54 | 9.0 | 290 |
| 29 | 1018.6 | 7 | 4.4 | 54 | 6.0 | 300 |
| 30 | 1023.8 | 7 | 4.0 | 55 | 2.9 | 20 |