旬ごとの値
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八丈島（東京都) 2009年（旬ごとの値） 詳細（日照・雪・その他）
| 月 | 旬 | 日照時間(h) | 全天日射量 (MJ/㎡) | 雪(cm) | 雲量 | 大気現象 | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 合計 | 日照率 | 各階級の日数 | 降雪 | 各階級の日数（降雪） | 最深積雪 | 各階級の日数（最深積雪） | 平均 | 各階級の日数 | 雪日数 | 霧日数 | 雷日数 | |||||||||||||||||||
| 不照 | 日照率 ≧40% | 平均 | 合計 | 日合計の最大 | ≧3cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | 値 | 日 | ≧0cm | ≧1cm | ≧5cm | ≧10cm | ≧20cm | ≧50cm | ≧100cm | ＜1.5 | ≧8.5 | |||||||||
| 値 | 日 | |||||||||||||||||||||||||||||
| 上旬 | 36.1 | 36 | 2 | 5 | 7.9 | 0 | 0 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.6 | 0 | 3 | 0 | 0 | 0 | ||
| 中旬 | 47.6 | 47 | 0 | 6 | 9.5 | 0 | 0 | 15* | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.1 | 0 | 1 | 0 | 0 | 3 | ||
| 下旬 | 23.1 | 20 | 1 | 1 | 7.5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.7 | 0 | 6 | 0 | 0 | 0 | |||
| 上旬 | 55.4 | 52 | 0 | 7 | 12.2 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.7 | 0 | 1 | 0 | 0 | 0 | |||
| 中旬 | 36.9 | 34 | 1 | 4 | 9.6 | 0 | 0 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.9 | 1 | 2 | 0 | 1 | 0 | ||
| 下旬 | 11.6 | 13 | 4 | 1 | 5.7 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.7 | 0 | 5 | 0 | 2 | 0 | |||
| 上旬 | 24.9 | 22 | 1 | 3 | 9.4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.0 | 0 | 8 | 0 | 1 | 0 | |||
| 中旬 | 55.4 | 47 | 2 | 5 | 14.0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.4 | 0 | 3 | 0 | 1 | 0 | |||
| 下旬 | 60.4 | 45 | 0 | 6 | 16.3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.9 | 1 | 4 | 0 | 2 | 0 | |||
| 上旬 | 68.7 | 54 | 1 | 6 | 18.1 | 0 | 0 | 02 | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5.6 | 2 | 2 | 0 | 1 | 0 | ||
| 中旬 | 53.8 | 42 | 2 | 6 | 16.9 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.3 | 0 | 4 | 0 | 0 | 0 | |||
| 下旬 | 59.5 | 45 | 2 | 6 | 17.8 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.7 | 1 | 3 | 0 | 1 | 1 | |||
| 上旬 | 62.7 | 46 | 1 | 6 | 19.3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.8 | 1 | 4 | 0 | 0 | 0 | |||
| 中旬 | 48.9 | 35 | 1 | 3 | 18.3 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.2 | 0 | 6 | 0 | 3 | 0 | |||
| 下旬 | 42.4 | 27 | 1 | 3 | 15.4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.0 | 0 | 5 | 0 | 4 | 2 | |||
| 上旬 | 35.2 | 25 | 3 | 4 | 15.0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.5 | 0 | 6 | 0 | 2 | 0 | |||
| 中旬 | 36.5 | 26 | 2 | 2 | 15.7 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.5 | 0 | 8 | 0 | 1 | 2 | |||
| 下旬 | 19.2 | 13 | 4 | 1 | 10.0 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.4 | 0 | 8 | 0 | 9 | 0 | |||
| 上旬 | 10.9 | 8 | 4 | 0 | 11.1 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.7 | 0 | 9 | 0 | 8 | 1 | |||
| 中旬 | 10.6 | 8 | 5 | 0 | 10.4 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9.4 | 0 | 8 | 0 | 9 | 0 | |||
| 下旬 | 45.3 | 30 | 1 | 5 | 15.7 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.1 | 0 | 6 | 0 | 1 | 3 | |||
| 上旬 | 41.8 | 31 | 0 | 3 | 16.5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.4 | 0 | 6 | 0 | 0 | 0 | |||
| 中旬 | 32.3 | 24 | 3 | 3 | 13.8 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.6 | 0 | 7 | 0 | 1 | 1 | |||
| 下旬 | 58.7 ) | 41 ) | 0 | 5 ) | 16.1 ) | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6.4 | 0 | 3 | 0 | 1 | 1 | |||
| 上旬 | 35.8 | 28 | 2 | 3 | 12.5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.8 | 0 | 8 | 0 | 5 | 2 | |||
| 中旬 | 46.8 | 38 | 3 | 6 | 13.5 | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.9 | 0 | 4 | 0 | 2 | 2 | |||
| 下旬 | 49.2 ) | 41 ) | 2 | 4 ) | 14.1 ) | -- | -- | 0 | 0 | 0 | 0 | 0 | 0 | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7.3 | 0 | 5 | 0 | 0 | 0 | |||
| 上旬 | 14.8 | 13 | 1 | 0 | 0 | 0 | ||||||||||||||||||||||||
| 中旬 | 43.0 | 38 | 1 | 4 | 0 | 0 | ||||||||||||||||||||||||
| 下旬 | 25.8 | 21 | 4 | 3 | 0 | 0 | ||||||||||||||||||||||||
| 上旬 | 55.2 | 52 | 0 | 7 | 0 | 0 | ||||||||||||||||||||||||
| 中旬 | 18.0 | 17 | 4 | 2 | 0 | 0 | ||||||||||||||||||||||||
| 下旬 | 44.1 | 43 | 0 | 5 | 0 | 0 | ||||||||||||||||||||||||
| 上旬 | 36.2 | 36 | 2 | 7 | 0 | 0 | ||||||||||||||||||||||||
| 中旬 | 33.8 | 34 | 3 | 4 | 0 | 0 | ||||||||||||||||||||||||
| 下旬 | 39.7 | 36 | 0 | 5 | 0 | 0 | ||||||||||||||||||||||||
- 値欄の記号の説明
- 赤線は、観測場所を移転した場合、観測装置を変更した場合または観測の時間間隔を変更した場合に、その前後のデータが均質でないことを示します。