Measurement of the microclimate on drystone retaining walls. Comparison of the climate in front of a wall covered with ivy and an exposed wall. Four temperatures were measured in each case:

• Wall interior approx. 30-40 cm below the surface.
• Wall surface
• Air temperature, distance 1m from the wall surface
• Air temperature, distance 6m from the wall surface.

The temperatures were measured 4 times per minute, written to a CSV file and the file was saved to Dropbox via modem.