指定気圧面の観測データ（日ごとの値）
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札幌 2012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 | 1003.4 | 18 | 8.5 | 91 | 1.3 | 270 |
| 2 | 1005.2 | 18 | 8.9 | 87 | 8.6 | 310 |
| 3 | 1010.0 | 18 | 8.7 | 80 | 6.6 | 300 |
| 4 | 1020.3 | 18 | 8.1 | 83 | 5.5 | 320 |
| 5 | 1020.0 | 18 | 8.0 | 74 | 2.6 | 140 |
| 6 | 1011.9 | 18 | 10.5 | 87 | 4.6 | 160 |
| 7 | 999.7 | 18 | 9.7 | 95 | 1.4 | 290 |
| 8 | 1002.0 | 18 | 9.2 | 90 | 1.3 | 130 |
| 9 | 1015.3 | 18 | 8.5 | 74 | 3.6 | 330 |
| 10 | 1023.5 | 18 | 7.8 | 57 | 1.9 | 60 |
| 11 | 1018.6 | 18 | 9.4 | 68 | 6.1 | 140 |
| 12 | 1001.8 | 18 | 9.9 | 82 | 2.8 | 140 |
| 13 | 997.8 | 18 | 9.0 | 71 | 2.4 | 200 |
| 14 | 1001.0 | 18 | 7.2 | 81 | 1.9 | 310 |
| 15 | 1016.4 | 18 | 4.6 | 63 | 1.2 | 30 |
| 16 | 1015.2 | 18 | 7.8 | 54 | 3.7 | 190 |
| 17 | 1000.4 | 18 | 6.1 | 88 | 0.9 | 250 |
| 18 | 1011.0 | 18 | 1.1 | 80 | 5.0 | 290 |
| 19 | 1008.5 | 18 | 1.4 | 75 | 1.8 | 140 |
| 20 | 1005.3 | 18 | 1.2 | 70 | 2.6 | 310 |
| 21 | 1012.9 | 18 | 1.9 | 59 | 4.0 | 180 |
| 22 | 1012.4 | 18 | 2.8 | 67 | 1.0 | 170 |
| 23 | 1009.3 | 18 | -0.2 | 55 | 4.1 | 310 |
| 24 | 1015.4 | 18 | 0.0 | 52 | 4.4 | 290 |
| 25 | 1014.5 | 18 | 2.1 | 57 | 2.1 | 180 |
| 26 | 991.7 | 18 | 2.8 | 91 | 1.1 | 70 |
| 27 | 1011.0 | 18 | -1.3 | 62 | 3.1 | 270 |
| 28 | 1006.4 | 18 | 2.3 | 89 | 8.5 | 160 |
| 29 | 1016.2 | 18 | 0.7 | 48 | 3.0 | 360 |
| 30 | 1016.8 | 18 | -1.2 | 87 | 0.4 | 190 |