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| Local Calendar Time |
| Annual average surface temperature variation based on weather reports | ||||||||||||
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| Period of annual temperature variation cycle:
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| True vertical component of regional Earth's Heat Flux |
| Time shift of annual highest temperature with respect to January 1 | ||||||||||||
| Local annual average surface temperature based on weather reports |
| Daily average surface temperature variation based on weather reports | ||||||||||||
| Local average Thermal diffusivity of the soil between Earth's surface and NTL |
| Period of daily temperature variation cycle:
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| Subsurface Thermal Conductivity profile as function of TVDss |
| Time shift of daily highest temperature with respect to Midnight 00:00 | ||||||||||||
| Temperature measurement threshold (usually
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where
| Measured Depth of wellbore trajectory Measured Depth with reference to Earth's surface (
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