No UV and lowest solar energy for a month, that was the 11th

Yesterday the 11th was the gloomiest day for over a month. With thick cloud trapped under the anticyclone no ultra violet radiation was recorded and solar energy was the lowest since 5th January.
Not surprisingly with continuous cloud cover, the difference between maximum and minimum temperatures was just over 2C in the twenty-four hour period (5.1C to 2.6C). The humidity at 0800 was low at 84%, again the lowest for a month.