Frequency rate, f | Limit values for health effects related to radiation density [W/m^{-2}] |
---|---|

6 ≤ f ≤ 300 GHz | 50 |

^{2}of exposed area. The local maximum effect density, calculated as the mean value for 1 cm

^{2}, should not exceed 20 times 50 Wm

^{-2}. The effect density from 6 to 10 GHz is calculated as the mean value for a six-minute period. For more than 10 GHz the effect density is calculated as the mean value over a 68/f

^{1.05}-minute-period (where f is the frequency in GHz) to compensate for the gradual decline in penetration depth as the frequency increases.