3 ms·It sure is. Plus, a little math: Age (years) = Equivalent dose (Gy) ÷ Dose rate (Gy per year or Gy/ka)by aa-jv 9mo agoIt sure is. Plus, a little math: Age (years) = Equivalent dose (Gy) ÷ Dose rate (Gy per year or Gy/ka)