100 Percent of 3-Foot Dose Rate _ — t — = t O Scintameter in P2V ACFT _ & Top Hat in P2V ACFT —- Theoretical Curve QO. 200 400 600 800 1000 Altitude , Feet Figure 3.3 Radiation attenuation over land (P2V-5 aircraft). Percent of 3- Foot Dose Rate © 12-O1N, 164-41E A I2-JIN, 165-02E Helicopter O Off Janet Theoretical Curve oO 200 400 600 800 1000 Altitude , Feet Figure 3.4 Radiation attenuation over water. 27 1200