指定気圧面の観測データ（日ごとの値）
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根室 1991年11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 | 1013.6 | 26 | 8.4 | 57 | 2.6 | 160 |
| 2 | 1019.9 | 26 | 7.1 | 55 | 2.2 | 50 |
| 3 | 1017.5 | 26 | 8.7 | 64 | 3.0 | 180 |
| 4 | 1008.9 | 26 | 13.6 | 85 | 5.6 | 180 |
| 5 | 1016.2 | 26 | 2.4 | 58 | 7.4 | 300 |
| 6 | 1023.5 | 26 | -0.6 | 55 | 8.6 | 270 |
| 7 | 1021.4 | 26 | 4.6 | 81 | 1.2 | 160 |
| 8 | 1013.8 | 26 | 11.1 | 92 | 5.4 | 180 |
| 9 | 1003.3 | 26 | 8.5 | 77 | 5.4 | 350 |
| 10 | 1011.0 | 26 | 5.3 | 52 | 3.7 | 250 |
| 11 | 1005.6 | 26 | 4.4 | 54 | 4.4 | 240 |
| 12 | 1008.3 | 26 | 3.0 | 56 | 4.8 | 260 |
| 13 | 1006.8 | 26 | 4.4 | 61 | 3.6 | 270 |
| 14 | 1011.3 | 26 | 2.6 | 64 | 3.8 | 240 |
| 15 | 1010.5 | 26 | 2.1 | 61 | 4.8 | 290 |
| 16 | 1019.6 | 26 | 0.9 | 62 | 5.3 | 250 |
| 17 | 1018.0 | 26 | 8.7 | 69 | 5.3 | 210 |
| 18 | 1015.2 | 26 | 6.0 | 73 | 2.1 | 240 |
| 19 | 1014.3 | 26 | 6.9 | 75 | 0.0 | - |
| 20 | 996.8 | 26 | 5.5 | 87 | 6.4 | 330 |
| 21 | 1015.4 | 26 | 2.5 | 55 | 9.0 | 300 |
| 22 | 1018.3 | 26 | 6.3 | 65 | 3.8 | 220 |
| 23 | 1013.1 | 26 | 7.5 | 61 | 2.5 | 220 |
| 24 | 1007.9 | 26 | 1.8 | 62 | 5.6 | 340 |
| 25 | 1015.9 | 26 | -3.9 | 51 | 7.6 | 280 |
| 26 | 1016.0 | 26 | 5.0 | 55 | 6.0 | 230 |
| 27 | 1019.9 | 26 | 6.2 | 56 | 3.1 | 250 |
| 28 | 1014.1 | 26 | 7.1 | 68 | 3.3 | 240 |
| 29 | 1008.9 | 26 | 5.1 | 58 | 4.2 | 60 |
| 30 | 1019.4 | 26 | 4.0 | 68 | 0.0 | - |