指定気圧面の観測データ（日ごとの値）
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根室 1988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 | 1024.0 | 26 | 0.7 | 76 | 3.5 | 220 |
| 2 | 1023.4 | 26 | 0.8 | 80 | 4.6 | 170 |
| 3 | 1019.9 | 26 | 1.6 | 96 | 1.7 | 110 |
| 4 | 1013.8 | 26 | 2.2 | 99 | 2.5 | 30 |
| 5 | 1018.7 | 26 | 2.7 | 85 | 1.7 | 290 |
| 6 | 1014.6 | 26 | 0.0 | 89 | 4.4 | 50 |
| 7 | 1014.5 | 26 | 0.5 | 80 | 6.9 | 340 |
| 8 | 1019.1 | 26 | 0.0 | 70 | 2.8 | 300 |
| 9 | 1015.1 | 26 | -0.4 | 77 | 2.7 | 300 |
| 10 | 1017.2 | 26 | 5.3 | 59 | 2.3 | 250 |
| 11 | 1020.5 | 26 | 7.1 | 65 | 1.3 | 180 |
| 12 | 1021.6 | 26 | 9.0 | 72 | 2.4 | 180 |
| 13 | 1007.8 | 26 | 5.6 | 98 | 4.8 | 220 |
| 14 | 1005.7 | 26 | 3.3 | 90 | 2.1 | 310 |
| 15 | 1006.8 | 26 | 1.8 | 98 | 1.5 | 90 |
| 16 | 1014.0 | 26 | 2.2 | 80 | 6.1 | 350 |
| 17 | 1021.7 | 26 | 7.5 | 68 | 3.7 | 250 |
| 18 | 1017.9 | 26 | 7.9 | 73 | 3.6 | 170 |
| 19 | 1014.5 | 26 | 7.5 | 82 | 5.1 | 150 |
| 20 | 998.3 | 26 | 6.2 | 91 | 4.2 | 180 |
| 21 | 1012.2 | 26 | 0.9 | 90 | 5.9 | 20 |
| 22 | 1009.4 | 26 | 1.1 | 92 | 5.9 | 130 |
| 23 | 994.7 | 26 | 2.2 | 96 | 2.9 | 290 |
| 24 | 997.8 | 26 | 1.2 | 79 | 4.6 | 40 |
| 25 | 1009.2 | 26 | 3.3 | 55 | 5.3 | 300 |
| 26 | 1011.9 | 26 | 6.2 | 81 | 5.6 | 170 |
| 27 | 1004.0 | 26 | 11.2 | 56 | 6.5 | 230 |
| 28 | 1011.7 | 26 | 11.4 | 52 | 2.6 | 140 |
| 29 | 1009.0 | 26 | 13.1 | 58 | 4.0 | 160 |
| 30 | 995.2 | 26 | 9.6 | 100 | 5.0 | 80 |