指定気圧面の観測データ（日ごとの値）
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稚内 1999年3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 | 1009.0 | 11 | -5.1 | 56 | 5.8 | 270 |
| 2 | 1004.9 | 11 | -2.6 | 50 | 3.0 | 280 |
| 3 | 1009.5 | 11 | -4.1 | 59 | 4.4 | 280 |
| 4 | 1010.4 | 11 | -6.0 | 52 | 6.9 | 330 |
| 5 | 1011.5 | 11 | -7.5 | 58 | 2.7 | 180 |
| 6 | 998.3 | 11 | -6.0 | 83 | 9.0 | 360 |
| 7 | 1011.1 | 11 | -4.4 | 55 | 4.2 | 260 |
| 8 | 1009.3 | 11 | -5.7 | 67 | 2.2 | 150 |
| 9 | 1013.8 | 11 | -5.9 | 52 | 5.4 | 270 |
| 10 | 1014.4 | 11 | -4.2 | 90 | 1.6 | 280 |
| 11 | 1015.3 | 11 | -4.9 | 58 | 4.6 | 270 |
| 12 | 1016.0 | 11 | -7.2 | 90 | 1.7 | 140 |
| 13 | 1022.0 | 11 | -1.2 | 57 | 6.0 | 240 |
| 14 | 1018.6 | 11 | 0.2 | 77 | 2.6 | 330 |
| 15 | 1019.5 | 11 | -1.8 | 63 | 5.2 | 330 |
| 16 | 1011.5 | 11 | -1.4 | 84 | 5.8 | 110 |
| 17 | 1018.9 | 11 | -2.8 | 78 | 3.5 | 130 |
| 18 | 1013.1 | 11 | -0.6 | 91 | 2.6 | 130 |
| 19 | 1015.0 | 11 | -2.9 | 83 | 4.0 | 30 |
| 20 | 1018.9 | 11 | -5.5 | 67 | 4.2 | 70 |
| 21 | 1018.8 | 11 | -6.3 | 63 | 3.9 | 150 |
| 22 | 1006.0 | 11 | -4.5 | 86 | 11.5 | 100 |
| 23 | 1016.5 | 11 | -4.2 | 58 | 2.2 | 160 |
| 24 | 1016.1 | 11 | 2.8 | 69 | 5.3 | 240 |
| 25 | 1014.4 | 11 | 5.2 | 87 | 4.9 | 200 |
| 26 | 1005.6 | 11 | 5.1 | 84 | 8.2 | 240 |
| 27 | 1009.6 | 11 | 0.7 | 67 | 4.7 | 360 |
| 28 | 1003.2 | 11 | -3.2 | 78 | 2.3 | 360 |
| 29 | 1016.4 | 11 | -5.7 | 71 | 7.7 | 330 |
| 30 | 1020.4 | 11 | -3.6 | 63 | 5.1 | 270 |
| 31 | 1018.7 | 11 | 1.3 | 95 | 4.5 | 200 |