HCyymmdd.CSV (yyは年を、mmは月を、ddは日を表わします)
1行目に空白行が入っています。2行目には観測時刻と観測要素名が、3行目には対応する観測要素の単位が入っています。4行目から147行目までは、観測データが入っています。データが欠測の場合は、"****"が入っています。なお、観測要素の最後に"天気"が入っていますが、データはありません。参考までにファイルの内容を示すと、次のようになっています。
"時刻","平均風速","平均風向","最大風速","同 風向"," 気温","最高気温","最低気温","相対湿度","露点温度","時間雨量"," 日雨量","時間日照","時間日射"," 気圧","海面気圧"," 天気",
"_"," m/s","_"," m/s","_"," ゚C"," ゚C"," ゚C"," %"," ゚C"," mm"," mm"," H"," MJ"," hPa"," hPa","_",
"00:10",4.2,"北北東",7.5,"北北東",1.5,1.9,1.5,95.5,0.8,0.0,0.0,0.0,0.00,1012.6,1020.1,"****",
"00:20",3.9,"北",8.7,"北",1.9,2.0,1.5,93.3,1.0,0.5,0.5,0.0,0.00,1012.3,1019.8,"****",
"00:30",4.0,"北北東",8.7,"北北東",1.7,1.9,1.5,94.9,0.6,0.5,0.5,0.0,0.00,1012.0,1019.5,"****",
"00:40",4.0,"北北東",7.6,"北北東",1.5,1.9,1.5,95.2,0.9,0.5,0.5,0.0,0.00,1011.7,1019.3,"****",
"00:50",3.9,"北北東",9.2,"北北東",1.7,1.9,1.4,96.0,1.0,1.0,1.0,0.0,0.00,1011.4,1019.0,"****",
"01:00",4.7,"北北東",9.7,"北北東",1.5,1.8,1.3,95.8,0.9,1.0,1.0,0.0,0.00,1011.3,1018.8,"****",
"01:10",4.4,"北北東",8.0,"北北東",1.5,1.7,1.3,92.6,0.4,0.5,1.5,0.0,0.00,1011.2,1018.7,"****",
"01:20",4.7,"北北東",8.8,"北北東",1.7,1.7,1.3,93.3,0.8,1.0,2.0,0.0,0.00,1010.9,1018.4,"****",
"01:30",4.5,"北北東",8.3,"北北東",1.7,1.8,1.3,94.7,0.9,1.0,2.0,0.0,0.00,1010.4,1017.9,"****",
"01:40",4.3,"北北東",7.8,"北北東",1.6,1.7,1.2,93.8,0.7,1.5,2.5,0.0,0.00,1010.2,1017.8,"****",
"01:50",4.2,"北",8.5,"北北東",1.4,1.6,1.2,92.8,0.3,1.5,2.5,0.0,0.00,1010.2,1017.7,"****",
"02:00",4.8,"北北東",10.5,"北北東",1.1,1.6,1.1,94.1,0.2,2.0,3.0,0.0,0.00,1009.8,1017.3,"****",
"02:10",4.8,"北北東",9.2,"北北東",1.1,1.5,1.0,94.6,0.3,0.5,3.5,0.0,0.00,1009.5,1017.1,"****",
"02:20",4.8,"北",9.3,"北北東",1.4,1.4,1.0,95.1,0.7,1.0,4.0,0.0,0.00,1009.9,1017.4,"****",
"02:30",4.2,"北",9.0,"北",1.4,1.5,1.0,94.9,0.7,1.5,4.5,0.0,0.00,1009.8,1017.3,"****",
"02:40",5.1,"北北東",9.0,"北北東",1.1,1.5,1.1,94.3,0.3,2.0,5.0,0.0,0.00,1009.4,1016.9,"****",
"02:50",4.8,"北北東",10.7,"北北東",1.3,1.5,1.1,93.6,0.4,2.0,5.0,0.0,0.00,1009.0,1016.5,"****",
"23:00",3.7,"北",8.0,"北",2.7,3.0,2.6,68.9,-2.5,0.0,31.5,0.0,0.00,1016.0,1023.5,"****",
"23:10",3.8,"北",7.6,"北",2.7,2.9,2.5,70.4,-2.1,0.0,31.5,0.0,0.00,1016.0,1023.5,"****",
"23:20",3.7,"北",7.1,"北",2.5,2.8,2.3,70.6,-2.2,0.0,31.5,0.0,0.00,1015.9,1023.5,"****",
"23:30",3.5,"北",6.8,"北",2.5,2.7,2.3,70.1,-2.4,0.0,31.5,0.0,0.00,1016.2,1023.7,"****",
"23:40",2.9,"北",5.8,"北",2.6,2.8,2.4,70.9,-2.1,0.0,31.5,0.0,0.00,1016.8,1024.3,"****",
"23:50",3.5,"北",6.8,"北",2.6,2.9,2.6,69.3,-2.4,0.0,31.5,0.0,0.00,1016.9,1024.5,"****",
"00:00",3.0,"北",5.8,"北",2.9,2.9,2.6,70.0,-2.0,0.0,31.5,0.0,0.00,1017.1,1024.7,"****",
観測要素
単位 最小単位 風速 m/s 0.1 風向 16方位 - 気温 ℃ 0.1 相対湿度 % 0.1 露点温度 ℃ 0.1 降水量 mm 0.5 日照時間 時間 0.1 全天日射量 MJ/m2 0.01 気圧 hPa 0.1 ※降水量、日照時間及び全天日射量は、データファイルの観測要素名では、それぞれ雨量、時間日照、時間日射と表示されています。
11列目の時間雨量は、観測時刻前1時間の降水量を表わしています。12列目の日雨量は、0時から観測時刻までの積算雨量を表わしています。
11列目の時間雨量、13列目の時間日照及び14列目の時間日射は、1時間毎の積算量を表しています。したがって、10分間の積算値とは異なります。詳しくは、「CSVデータ利用上の注意」をご覧ください。
エクセル等の表計算ソフトがインストールされている環境で、このファイルを読み込みと、表計算ソフトが立ち上がり、次のような形でデータが表示されます。