Cambridge Weather Summary
   December 2009

Based on 31 days' worth of half-hourly data recorded with
rooftop sensors at the Computer Laboratory, Cambridge, U.K.

Temperature (degrees C)
   Average: 3.2
   Minimum: -5.2 (20 December 08:30)
   Maximum: 12.7 (06 December 05:00)

Relative Humidity (%)
   Average: 92.7
   Minimum: 65 (17 December 17:30)
   Maximum: 100 (01 December 08:00)

Dew Point (degrees C)
   Average: 2.1
   Minimum: -7.8 (20 December 09:30)
   Maximum: 11.7 (06 December 07:00)

Atmospheric Pressure (mbar)
   Average: 1003.6
   Minimum: 979 (22 December 01:00)
   Maximum: 1035 (11 December 04:00)

Half-hourly Instantaneous Wind Speed (knots)
   Average: 4.8
   Minimum: 0.0 (01 December 12:00)
   Maximum: 22.0 (06 December 05:00)

Half-hourly Maximum Wind Speed (knots)
   Average: 11.4
   Minimum: 0 (09 December 19:00)
   Maximum: 42 (06 December 09:00)

Prevalent Wind Direction
   SW (19.2% of readings)

Total Sunshine Hours
   75.0

Total Rainfall mm
   40.3