For the rainfall record provided below, plot cumulative rainfall (P) and gross rainfall hyetograph (in./hr) using t = 15 min = 0.25 hr. Time (min)

For the rainfall record provided below, plot cumulative rainfall (P) and gross rainfall hyetograph (in./hr) using Δt = 15 min = 0.25 hr.

Time (min) 0 15 30 45 60 75 90 105 120 135 P (in.) Time (hr) 1 2 3 Q (cfs) 0 0.2 0.61.1 1.5 182.02.2 2.3 25 7 10 12 100 200 500 80700 550 50 250 50 100 75 0