指定気圧面の観測データ（日ごとの値）
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札幌 2002年4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 | 1008.6 | 26 | 7.7 | 54 | 4.4 | 110 |
| 2 | 1008.0 | 26 | 8.5 | 73 | 6.8 | 310 |
| 3 | 1006.9 | 26 | 6.8 | 66 | 2.1 | 20 |
| 4 | 1008.6 | 26 | 7.5 | 70 | 2.9 | 360 |
| 5 | 1018.7 | 26 | 7.7 | 28 | 4.9 | 330 |
| 6 | 1018.7 | 26 | 7.2 | 35 | 0.5 | 60 |
| 7 | 1011.0 | 26 | 8.3 | 44 | 7.4 | 120 |
| 8 | 1003.4 | 26 | 7.9 | 74 | 5.8 | 150 |
| 9 | 1007.0 | 26 | 5.3 | 81 | 6.0 | 330 |
| 10 | 1009.7 | 26 | 7.9 | 41 | 3.7 | 230 |
| 11 | 1013.8 | 26 | 9.7 | 36 | 2.3 | 260 |
| 12 | 1011.4 | 26 | 9.6 | 50 | 4.3 | 150 |
| 13 | 1007.6 | 26 | 6.4 | 64 | 1.7 | 120 |
| 14 | 1011.2 | 26 | 8.8 | 63 | 1.0 | 20 |
| 15 | 1009.6 | 26 | 11.1 | 63 | 11.4 | 160 |
| 16 | 1011.0 | 26 | 14.3 | 71 | 1.1 | 340 |
| 17 | 993.3 | 26 | 15.3 | 69 | 8.7 | 130 |
| 18 | 996.7 | 26 | 10.4 | 37 | 3.1 | 230 |
| 19 | 1015.7 | 26 | 9.8 | 48 | 4.8 | 330 |
| 20 | 1018.6 | 26 | 14.3 | 42 | 5.1 | 130 |
| 21 | 1017.5 | 26 | 13.8 | 55 | 6.1 | 140 |
| 22 | 1019.7 | 26 | 13.0 | 68 | 9.9 | 150 |
| 23 | 1020.4 | 26 | 14.0 | 53 | 10.4 | 140 |
| 24 | 1009.6 | 26 | 11.4 | 65 | 15.7 | 160 |
| 25 | 1005.4 | 26 | 7.5 | 80 | 7.7 | 320 |
| 26 | 1021.5 | 26 | 10.4 | 31 | 1.8 | 40 |
| 27 | 1024.3 | 26 | 11.4 | 39 | 0.9 | 140 |
| 28 | 1022.5 | 26 | 11.4 | 49 | 1.2 | 20 |
| 29 | 1019.1 | 26 | 12.4 | 49 | 2.0 | 80 |
| 30 | 1011.1 | 26 | 8.6 | 66 | 6.7 | 150 |