**RATIONALE**
This program calculates a set of dimensionless unit hydrographs (DUH) by the cascade of linear reservoirs (CLR),
for the following six (6) values of Courant number: 2, 1.5, 1, 0.5, 0.2, and 0.1;
and the number of reservoirs N varying from 1 to 10.

The Courant number is C = t_{r}/ K.
The value t_{r} is the unit hydrograph duration, in hours.
The value K is the reservoir storage constant, in hours.

The program can be used to compare amounts of runoff diffusion within the given (practical) range of C and N values.

The dimensionless unit hydrograph has dimensionless time t_{*} as abscissa and dimensionless discharge Q_{*} as ordinate.

The dimensionless time is t_{*} = t / t_{r}, in which t_{r} is the duration of the unit hydrograph, in hours.

The dimensionless discharge is Q_{*} = Q / Q_{m}, in which Q_{m} = 2.777778 (A / t_{r}), is the maximum attainable discharge
(runoff concentration only), in m^{3}/s.
In this formula, basin area A is in km^{2}.

The program provides six DUH tables of Q_{*} vs t_{*}, for values of Courant number: 2, 1.5, 1, 0.5, 0.2, and 0.1.

A summary table of CLR DUH peak discharge and time of occurrence precedes the six DUH tables. Note that the largest value of
DUH peak discharge is Q_{*} = 1 at time t_{*} = 1, associated with C = 2 and N = 1. This is the least diffused DUH.
Also, note that the smallest value of DUH peak discharge is Q_{*} = 0.013 at time t_{*} = 91, associated with C = 0.1 and N = 10. This is the most diffused DUH.