Table 3. Temperature ranges and correlations between air and surface temperatures across Africa.

	median (95% range) of temperature in °Celsius	correlation with air temperature (95% CI)	correlation of the mean over the year with mean air temperature (95% CI)
night air temperature	20.8 (6.0–29.5)	–	–
night surface temperature	17.5 (1.7–24.4)	0.881 (0.880–0.882)	0.84 (0.82–0.86)
fitted night air temperature	20.9 (6.3–29.1)	0.967 (0.967–0.967)	1.00 (1.00–1.00)
day air temperature	29.2 (17.0–41.3)	–	–
day surface temperature	34.6 (19.8–52.0)	0.778 (0.777–0.780)	0.70 (0.67–0.72)
fitted day air temperature	29.1 (17.5–40.9)	0.961 (0.961–0.961)	1.00 (1.00–1.00)

Data are based on the time series between 2003 and 2006 aggregated to 64 time points per year, showing correlations (95% confidence intervals based on 1000 bootstrap samples) between time series and between means of the time series for night and day time.

– for correlations of a dataset with itself.