指定気圧面の観測データ（日ごとの値）
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稚内 1998年10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 | 1016.8 | 11 | 15.9 | 85 | 1.3 | 70 |
| 2 | 1006.0 | 11 | 13.6 | 94 | 4.3 | 140 |
| 3 | 1011.1 | 11 | 12.5 | 58 | 4.2 | 300 |
| 4 | 1007.9 | 11 | 12.3 | 85 | 1.1 | 340 |
| 5 | 1018.5 | 11 | 15.3 | 49 | 6.1 | 210 |
| 6 | 1014.1 | 11 | 14.6 | 39 | 4.0 | 310 |
| 7 | 1019.8 | 11 | 11.3 | 47 | 3.3 | 350 |
| 8 | 1012.5 | 11 | 10.8 | 71 | 1.4 | 160 |
| 9 | 1011.4 | 11 | 12.9 | 80 | 6.5 | 50 |
| 10 | 1019.0 | 11 | 11.4 | 82 | 1.5 | 140 |
| 11 | 1023.9 | 11 | 16.7 | 66 | 5.6 | 220 |
| 12 | 1023.3 | 11 | 17.9 | 77 | 6.4 | 230 |
| 13 | 1024.5 | 11 | 14.0 | 89 | 2.5 | 130 |
| 14 | 1017.7 | 11 | 15.8 | 87 | 1.6 | 110 |
| 15 | 997.2 | 11 | 18.2 | 94 | 6.0 | 250 |
| 16 | 1005.6 | 11 | 14.8 | 44 | 8.4 | 270 |
| 17 | 1020.7 | 11 | 11.3 | 66 | 4.3 | 100 |
| 18 | 1005.1 | 11 | 10.8 | 90 | 11.8 | 100 |
| 19 | 1009.1 | 11 | 9.7 | 79 | 2.8 | 330 |
| 20 | 1009.3 | 11 | 9.9 | 87 | 12.7 | 350 |
| 21 | 1022.0 | 11 | 13.2 | 61 | 6.8 | 240 |
| 22 | 1029.7 | 11 | 10.4 | 63 | 5.4 | 80 |
| 23 | 1031.3 | 11 | 8.1 | 68 | 2.0 | 120 |
| 24 | 1023.5 | 11 | 13.2 | 67 | 3.4 | 270 |
| 25 | 1007.4 | 11 | 8.7 | 94 | 2.9 | 170 |
| 26 | 1012.1 | 11 | 10.4 | 69 | 6.2 | 30 |
| 27 | 1017.1 | 11 | 12.8 | 63 | 4.6 | 210 |
| 28 | 1010.5 | 11 | 12.3 | 76 | 1.2 | 140 |
| 29 | 1008.6 | 11 | 13.2 | 67 | 4.2 | 240 |
| 30 | 1014.2 | 11 | 12.9 | 43 | 4.1 | 260 |
| 31 | 1015.1 | 11 | 9.5 | 65 | 1.7 | 120 |