disproportionately higher than other readings in the immediate area. When such readings are reported, a
recheck in that area should be made; if confirmed, these hot spots should be plotted and indicated
The plotted contours may be extended or extrapolated to areas downwind in which fallout has not
arrived and may be extended to intersect with ground zero if necessary to complete the fallout pattern.
As more information is received, the pattern is altered accordingly and thus maintained up-to-date.
Figure 13 shows a typical plot which might be developed from survey data.
FIGURE 13. FALLOUT PATTERN PLOTTED
FROM NORMALIZED DATA.