指定気圧面の観測データ（日ごとの値）
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秋田 2004年1月9時 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 1013.7 | 7 | 5.3 | 54 | 6.1 | 290 |
| 2 | 1013.2 | 7 | 2.9 | 89 | 1.0 | 160 |
| 3 | 1011.9 | 7 | 2.5 | 90 | 3.2 | 360 |
| 4 | 1023.3 | 7 | 3.0 | 44 | 6.9 | 280 |
| 5 | 1025.2 | 7 | 3.4 | 48 | 6.8 | 320 |
| 6 | 1023.9 | 7 | -0.7 | 92 | 4.5 | 350 |
| 7 | 1023.7 | 7 | -1.9 | 73 | 4.0 | 130 |
| 8 | 1015.4 | 7 | -0.1 | 66 | 11.5 | 290 |
| 9 | 1027.1 | 7 | -0.1 | 79 | 5.4 | 360 |
| 10 | 1019.2 | 7 | -3.0 | 77 | 4.9 | 140 |
| 11 | 1015.1 | 7 | -3.1 | 78 | 10.4 | 290 |
| 12 | 1021.1 | 7 | 1.5 | 52 | 2.1 | 270 |
| 13 | 1001.2 | 7 | 1.7 | 67 | 5.1 | 160 |
| 14 | 1004.3 | 7 | -1.3 | 77 | 8.3 | 330 |
| 15 | 1015.1 | 7 | -3.0 | 78 | 7.6 | 320 |
| 16 | 1020.7 | 7 | 0.1 | 87 | 7.6 | 310 |
| 17 | 1023.5 | 7 | -2.5 | 84 | 3.2 | 110 |
| 18 | 1022.0 | 7 | -3.0 | 83 | 3.2 | 140 |
| 19 | 1009.1 | 7 | 3.7 | 68 | 7.5 | 120 |
| 20 | 1010.2 | 7 | 1.2 | 93 | 2.6 | 90 |
| 21 | 1009.9 | 7 | 1.2 | 93 | 3.8 | 130 |
| 22 | 1000.3 | 7 | -0.2 | 78 | 8.9 | 280 |
| 23 | 1002.1 | 7 | -2.2 | 64 | 12.9 | 270 |
| 24 | 1007.5 | 7 | 3.1 | 56 | 9.2 | 270 |
| 25 | 1010.3 | 7 | -1.7 | 90 | 2.4 | 130 |
| 26 | 1013.9 | 7 | -2.0 | 89 | 3.3 | 130 |
| 27 | 1011.0 | 7 | -0.8 | 61 | 0.9 | 140 |
| 28 | 1009.4 | 7 | 0.3 | 75 | 7.0 | 310 |
| 29 | 1013.9 | 7 | -1.0 | 82 | 4.5 | 30 |
| 30 | 1014.7 | 7 | -1.8 | 91 | 1.6 | 140 |
| 31 | 1016.1 | 7 | 0.3 | 65 | 3.2 | 350 |