指定気圧面の観測データ（日ごとの値）
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名瀬／本茶峠 1996年12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 | 988.8 | 295 | 9.7 | 67 | 3.9 | 330 |
| 2 | 990.8 | 295 | 11.0 | 78 | 1.8 | 50 |
| 3 | 990.8 | 295 | 15.2 | 68 | 3.1 | 100 |
| 4 | 981.6 | 295 | 18.9 | 74 | 4.4 | 150 |
| 5 | 979.4 | 295 | 12.6 | 97 | 5.5 | 320 |
| 6 | 984.2 | 295 | 9.8 | 79 | 3.1 | 320 |
| 7 | 987.3 | 295 | 10.7 | 70 | 4.5 | 300 |
| 8 | 989.7 | 295 | 12.5 | 64 | 2.3 | 70 |
| 9 | 986.5 | 295 | 15.3 | 69 | 2.6 | 110 |
| 10 | 984.0 | 295 | 14.1 | 75 | 2.8 | 310 |
| 11 | 986.6 | 295 | 14.1 | 60 | 1.4 | 320 |
| 12 | 985.4 | 295 | 14.7 | 85 | 2.5 | 90 |
| 13 | 984.3 | 295 | 14.6 | 81 | 2.3 | 300 |
| 14 | 985.7 | 295 | 15.8 | 82 | 3.3 | 10 |
| 15 | 986.9 | 295 | 17.1 | 76 | 4.0 | 90 |
| 16 | 985.5 | 295 | 18.0 | 70 | 3.8 | 110 |
| 17 | 983.4 | 295 | 17.1 | 82 | 3.4 | 310 |
| 18 | 988.2 | 295 | 12.0 | 64 | 3.3 | 310 |
| 19 | 990.5 | 295 | 11.7 | 69 | 2.9 | 310 |
| 20 | 990.5 | 295 | 10.8 | 96 | 3.0 | 80 |
| 21 | 987.2 | 295 | 13.1 | 72 | 1.3 | 310 |
| 22 | 984.7 | 295 | 14.7 | 59 | 5.7 | 290 |
| 23 | 986.9 | 295 | 11.7 | 69 | 1.8 | 360 |
| 24 | 986.4 | 295 | 11.6 | 70 | 1.9 | 70 |
| 25 | 985.2 | 295 | 12.9 | 67 | 1.1 | 320 |
| 26 | 984.7 | 295 | 14.9 | 60 | 1.6 | 170 |
| 27 | 985.8 | 295 | 14.8 | 57 | 1.5 | 330 |
| 28 | 984.3 | 295 | 14.0 | 64 | 2.0 | 340 |
| 29 | 984.9 | 295 | 13.1 | 62 | 0.7 | 250 |
| 30 | 986.2 | 295 | 15.2 | 64 | 0.8 | 320 |
| 31 | 986.8 | 295 | 14.8 | 63 | 1.6 | 90 |