The rainfall figures for successive 30 – minute intervals are 36, 40, 120, 85, 45, 45 and 30 mm/hr. If the ϕ index is 35 mm/hour, determine W-index.

1
24.3 mm/hour
2
44.3 mm/hour
3
34.3 mm/hour
4
54.3 mm/hour

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