Saturday, March 19, 2011

Saturday Morning, Half the Radiation

Less radiation after a rainstorm?  Here is the report...

This morning's reading is ~0.01mr/hr.  

I count the clicks per minute and then use a conversion factor for my geiger.  I'm getting anywhere from 5 to 15 clicks per minute in the areas I'm testing, which translates to ~0.01mr/hr to 0.02mr/hr, and is considered background levels.     

The Dept. of Health has a monitoring station in Seattle.  They are using clicks per min(cpm).  Last month, Seattle had a high of 41 cpm with an average of 14. Yesterday, it was 11cpm. 

http://www.doh.wa.gov/Topics/japan/monitor.htm

Look at Spokane's readings.  


Someone on a geigercounter yahoo group was reporting a spike on the 17th

http://tech.groups.yahoo.com/group/CDV700CLUB/message/33547

"Chris,

 I've been measuring radiation here in SW WA state since Monday.
 The equipment used is the CDV-457.
 Everything was normal until 1430 hrs Pacific time yesterday, when the background radiation doubled fairly quickly.
 The level stayed well above normal for about an hour and a half, then slowly went back down to nearly normal background.
 I'm not sure if this was an isolated instance, or if it was the first sign of stuff coming over from Japan.
 Radiation levels appear to be about normal background so far this morning.

-Tom


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