(3) The decay rate also may be calculated from the plotted slope by measuring each axis and
using the formula n =
(a) To do this, measure the distance from the point where the "best fit" line crosses the
y-axis directly down to the bottom of the log-log cycles. Record this measurement as the y . Measure
from the point where the best fit line crosses the x-axis directly to the left edge of the log-log-cycles.
Record this measurement as the x . See the example measurements for locations A and B in Figure 4-5.
Time after burst (H + ___ hours)
Figure 4-5. Decay Rate Determination Measurement of Slope