someone woke up

[mark1]

march 11 , 20 degree air , 41.6 degree surface ground under leaf pile .

 

[PJay]

march 11 , 20 degree air , 41.6 degree surface ground under leaf pile .

Its impressive how the leaf pile works together with the ground in moderating the effects of the air temperature highs and lows. Thanks for sharing your readings! It looks like box turtles discovered the benefits of insulation and geothermal long before we did.