Year	P	R	U
1981	92.0	8.7	2.6
1982	101.6	14.1	4.5
1983	125.1	37.7	11.1
1984	77.0	7.1	2.1
1985	91.5	6.9	1.6
1986	123.5	28.1	8.2

Use the methodology described in Ponce and Shetty (1995) to obtain the parameters of the conceptual water balance model, i.e., to calculate:

• the surface-runoff initial-abstraction ratio λ_s and the wetting potential W_p, and

• the baseflow initial-abstraction ratio λ_u and the vaporization potential V_p.