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c. Electrical contact problem on Vpile (unlikely, but should be checked)

Wiki Markupd. Heat going into latent heat of fusion (melting mixed-phase moisture), rather than sensible heat (can partly check by looking at warm periods \ -\- a new idea for me).  \  [The results of this check are not very convincing \ -\- see below plot.\]

4. Horizontal lines on the plot below are caused by rapid changes of measured qsoil (which is really liquid qsoil) that, in the one case I examined in detail, was caused by rapid warming (and thus melting) of the soil.  The portion of this change that occurs in the 3 hours that the TP01 is reporting replicate values appears as a horizontal line.  I'll update this plot with data values averaged to 3hours to eliminate this artifact, but there still will be the question of whether the qsoil value is valid.

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