Monitoring data from a
Ground Dose Rate
(hours after burst)
Soil Type in which decay approximates the data.
Connect 40 cGyph on the R1 scale and 23 cGyph on the Rt
Holding the hairline firmly at its point of
intersection with the index scale, align equal values on
of the hairline with each of the four soil types to
determine which is closest to H + 5; repeat this procedure,
with the dose rate at H + 6 and H + 7.
A review of the
Soil Type IV (Figure 5-9) approximates the data given.
Soil Type IV.