指定気圧面の観測データ（日ごとの値）
 |  |
 |  |  |  |  |  |  |  |  |  |  |  |  |
 |  |  |  |  |  |  |  |  |  |  |  |  |
 |  |  |  |  |  |
昭和 1977年4月21時（現地時間 15時） 地上
| 日 | 気圧(hPa) | 高度(m) | 気温(℃) | 相対湿度(%) | 風速(m/s) | 風向(°) |
|---|---|---|---|---|---|---|
| 1 | 989.3 | 21 | -4.6 | 60 | 9.3 | 90 |
| 2 | 984.9 | 21 | -6.6 | 54 | 0.1 | /// |
| 3 | 989.2 | 21 | -6.3 | 57 | 0.1 | /// |
| 4 | 988.6 | 21 | -7.4 | 47 | 0.2 | /// |
| 5 | 981.0 | 21 | -12.4 | 58 | 0.3 | 20 |
| 6 | 983.3 | 21 | -9.9 | 83 | 3.4 | 170 |
| 7 | 988.2 | 21 | -7.4 | 51 | 3.6 | 100 |
| 8 | 988.4 | 21 | -8.3 | 64 | 4.5 | 80 |
| 9 | 980.3 | 21 | -6.9 | 93 | 18.3 | 50 |
| 10 | 988.6 | 21 | -8.7 | 98 | 3.9 | 180 |
| 11 | 985.3 | 21 | -10.7 | 82 | 1.3 | 120 |
| 12 | 974.5 | 21 | -16.1 | 46 | 10.3 | 60 |
| 13 | 974.3 | 21 | -8.9 | 68 | 4.7 | 50 |
| 14 | 980.4 | 21 | -6.5 | 89 | 14.5 | 40 |
| 15 | 989.0 | 21 | -7.8 | 77 | 10.6 | 40 |
| 16 | /// | /// | /// | /// | /// | /// |
| 17 | 990.7 | 21 | -16.4 | 60 | 7.5 | 80 |
| 18 | 987.4 | 21 | -10.5 | 43 | 5.7 | 100 |
| 19 | 985.9 | 21 | -10.5 | 44 | 5.3 | 120 |
| 20 | 991.8 | 21 | -12.8 | 42 | 4.0 | 50 |
| 21 | 988.9 | 21 | -14.8 | 38 | 5.2 | 120 |
| 22 | 986.4 | 21 | -15.0 | 38 | 0.5 | 110 |
| 23 | 1000.7 | 21 | -14.7 | 65 | 6.9 | 10 |
| 24 | 1006.0 | 21 | -18.0 | 38 | 1.6 | 110 |
| 25 | 994.0 | 21 | -16.7 | 34 | 2.2 | 170 |
| 26 | 977.3 | 21 | -7.4 | 79 | 21.6 | 50 |
| 27 | 982.0 | 21 | -8.3 | 94 | 22.7 | 40 |
| 28 | 1000.3 | 21 | -7.7 | 87 | 9.3 | 40 |
| 29 | 981.4 | 21 | -9.0 | 71 | 11.4 | 50 |
| 30 | 988.0 | 21 | -10.2 | 71 | 5.6 | 70 |