Assessing the Return Periods and Hydroclimatic Parameters for Rainwater Drainage in the Coastal City of Cotonou in Benin under Climate Variability

Table 6

Talbot coefficients for different return periods.

Return period (year)	2	5	10	20	40	50	100
a	106.58	127.68	149.18	168.38	187.37	193.83	213.19
b	0.74	0.70	0.75	0.78	0.81	0.82	0.84
c	1.03	0.98	0.99	0.99	0.99	1	1