Recovered SPEEDI Data From Evacuation Zone – In English

Radiation data was recovered recently from the radiation stations within the evacuation zone. The data was put out but only in Japanese. We have compiled the hourly spreadsheets for each station into one document and provided a reference map for station locations. Headers and notes are now in English.

The data shows what days and times radiation levels began to rise drastically in different areas. Some stations stop reporting due to power outage or damage from the disaster.

The spreadsheet has a page for each station. Launch Google Spreadsheet
The companion Google Map with approximate location of the SPEEDI monitor stations.
Some additional station information (in Japanese)

This article would not be possible without the extensive efforts of the SimplyInfo research team
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