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You can look up ground temperature for your location here - https://weatherdownloader.oikolab.com/downloader https://weatherdownloader.oikolab.com/downloader.
by a_square_peg 5y ago
You can look up ground temperature for your location here - https://weatherdownloader.oikolab.com/downloader https://weatherdownloader.oikolab.com/downloader.
Layer 4 is between 1m to 3m depth beneath the surface.
- arethuza 5y agoApologies, I didn't appreciate you meant average temperature underground - that is definitely much warmer. We have a ventilation shaft for an old limestone mine near our house and on a cold day the warm air rising from it is very noticeable.
- a_square_peg 5y agoI wasn't the commenter so no worries about apologies... just wanted to point out where you can find this information. :)