On 28 December, one hour of total b

On 28 December, one hour of total bright sunshine was recorded and the mean wind speed was 5.1 km h−1.
a.
On 23 August, 11.4 hours of bright sunshine were recorded and the mean wind speed was 11.9 km h−1.
b.
On 27 September, three hours of bright sunshine were recorded and the mean wind speed was 28.8 km h−1.