| Definition | Site name of capturing sample (N1–N5) | Year of radiation dose measurement at a location (yyyy) | Date of measuring radiation dose at a location (yyyy/mm/dd) | Average value of radiation dose (µSv h-1) | Standard deviation of radiation dose (µSv h-1). “-” represents the unspecified values | Number of spots measured | The date last modified (yyyy/mm/dd). Blank is the published date |