Tritium was found and 2.35 billion becquerels/liter cesium. Radioactive caesium was measured in concentrations varying from 49 to 69 becquerels per cubic centimeter. Gunma was found to be contaminated with 426 becquerels per kilogram of caesium. The resulting standard value, A, is 226 becquerels per kilogram of carbon. The sample of an eight-year-old girl contained 1.13 becquerels/liter. For SI, this is becquerels per square meter (or Bq/m).