nbakki https://blog.hatena.ne.jp/nbakki/ How much is it in Tokyo? https://nbakki.hatenablog.com/ Danger Currently China suffers severe air pollution. Pollution substance PM2.5 is drifted to Korea and Japan. The following figure shows the density of PM2.5 in Tokyo during last three months. 2013 Nov - 2014 Jan. 2013 Dec - 2014 Feb. Source is Ministry of the Environment. www.env.go.jp/air/osen/pm/info/pr… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnbakki.hatenablog.com%2Fentry%2F2014%2F02%2F25%2F211512" title="Density of PM2.5 in Tokyo - How much is it in Tokyo?" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> http://cdn-ak.f.st-hatena.com/images/fotolife/n/nbakki/20140225/20140225154655.jpg Hatena Blog https://hatena.blog 2014-02-25 21:15:12 rich https://nbakki.hatenablog.com/entry/2014/02/25/211512 1.0 100%