Recent Changes of Some Observed Climate Extreme Events in Kano

Table 3

Summary of the daily temperature indices between the base (1961–1990) and recent (1991–2007) period.

Indices	Period		Unit
	1960–1990	1991–2007
Cool nights	211	150	Days
Warm nights	203	150	Days
Cool days	210	151	Days
Warm days	178	147	Days
Warm spell	92	319	Days