Given: To determine H-hour by the mathematical method, use the formula:

1

*R*a

n

1

*R*b

5. The earliest and latest data from a series of monitoring reports are shown below. At what time was H-

hour?

Earliest reading = 150 cGyph at 0900 hours, 24 June.

Latest reading = 42 cGyph at 1800 hours, 24 June.

A.

0317

B.

0345

C.

0414

D.

0518

0900

0930

1000

1030

1100

1130

A

65

28

18

12

10

8

B

35

21

15

12

9

C

90

62

49

39

6. You have received monitoring data from three locations as shown in Figure 4-5. H-hour is determined

to have been at 0830. What is the average value for *n *based on this data?

A.

0.08

B.

1.0

C.

1.2

D.

1.5

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