Cambridge Weather Summary
   September 2009

Based on 30 days' worth of half-hourly data recorded with
rooftop sensors at the Computer Laboratory, Cambridge, U.K.

Temperature (degrees C)
   Average: 15.1
   Minimum: 5.2 (27 September 04:30)
   Maximum: 27.8 (08 September 14:30)

Relative Humidity (%)
   Average: 73.8
   Minimum: 36 (01 September 13:00)
   Maximum: 100 (11 September 01:00)

Dew Point (degrees C)
   Average: 10.2
   Minimum: 3.6 (20 September 14:30)
   Maximum: 17.7 (08 September 10:00)

Atmospheric Pressure (mbar)
   Average: 1022.1
   Minimum: 988 (03 September 04:00)
   Maximum: 1041 (10 September 19:30)

Half-hourly Instantaneous Wind Speed (knots)
   Average: 5.5
   Minimum: 0.0 (12 September 19:30)
   Maximum: 30.0 (03 September 17:00)

Half-hourly Maximum Wind Speed (knots)
   Average: 13.0
   Minimum: 0 (12 September 19:30)
   Maximum: 46 (03 September 14:30)

Prevalent Wind Direction
   SW (28.5% of readings)

Total Sunshine Hours
   137.3

Total Rainfall mm
   9.7