船橋 Radiation

This testing by Funabashi City shows hot spots of around 0.44 and 0.45 microsieverts/hr (μSv/h). These are just at daycares and so on. Two are in sandboxes, one in a field (or garden?).
http://www.city.funabashi.chiba.jp/information/p015854_d/fil/taiki230705.pdf