Table 1 Number of persons by group, range of thyroid activity measured on April 12th to 16th, 2011 and equivalent thyroid dose

From: Thyroid doses for evacuees from the Fukushima nuclear accident

Age group Number of persons I-131 thyroid activity range (kBq) Thyroid dose range (mSv) : inhalation Thyroid dose range (mSv) : ingestion
0–9 5 N.D.−0.017 N.D.−21 N.D.−24
10–19 3 0.090–0.54 3.8–23 4.2–25
20–29 9 N.D.−0.59 N.D.−16 N.D.−17
30–39 6 N.D.−0.17 N.D.−4.4 N.D.−4.9
40–49 4 N.D.−1.5 N.D.−33 N.D.−37
50–59 10 N.D.−1.1 N.D.−31 N.D.−34
60–69 12 N.D.−0.20 N.D.−5.3 N.D.−5.8
70–79 3 0.090–1.5 2.3–31 2.5–34
80+ 2 N.D.−0.70 N.D.−19 N.D.−21
Unknown 8 N.D.−1.4 N.D.−28 N.D.−30