- The analysis results show radiation (Bq) per unit area (m2).
- Sampling points were located in the southwest of Fukushima City approximately 73 km from the Fukushima Dai-ichi NPP. Sampling points were selected from three ecosystems with different land uses (agricultural land, grass land and forest) within a 2 km x 2 km square. A total of 15 sampling points of which 6 points were of agricultural land (upland field 3 points, paddy field 1 point and orchard 2 points), 4 points of grass land (pasture 3 points and lawn 1 point) and 5 points of forest (broad-leaved tree dominant 3 points and needle-leaved tree dominant 2 points) were chosen.
- Soil samplings were conducted once before rainy season and once after rainy season (total twice). Using core samplers (diameter 9.5 cm and depth 25 cm) , soil from surface to a depth of 20 cm were sampled. Vegetation (agricultural area or grass land) or litter (forest) covering the top soil were removed to obtain soil samples and vegetation / litter were also sampled separately.
- Radioactivity concentration and error show decay-compensated values as of June 14, 2011.
- ND in the columns "Radioactivity Concentration" and "-" in the column "Error": Nuclide analysis results were below the detection limit.
