Table 5.

Effective thermal conductivity of the ground below 60 m depth for each borehole in each month of the measurement obtained with Equation (2). The mean and the standard deviation of the values in each borehole are included. (${}^{*}$ Less than 10 m of log was used, ${}^{**}$ Damaged grouting).

Borehole	$\mathit{\lambda }$ ( W m${}^{-1}$ K${}^{-1}$)						Average Relative Error (%)
	Oct.	Nov.	Dec.	Jan.	Feb.	Mar.
B0	-	-	2.48	2.50	2.28	2.45	8.9
* B2	4.20	2.52	5.59	2.88	3.03	3.67	70.8
C1	-	2.36	2.37	2.40	2.25	2.27	8.9
D	2.62	2.75	2.53	2.54	2.34	2.61	4.9
E2	2.96	2.69	2.53	2.37	2.28	2.24	4.8
E3	2.58	2.83	2.42	2.43	2.48	2.41	2.6
** F1	4.14	5.08	3.90	-	-	3.98	16.1
G0	2.78	2.66	2.56	2.48	2.57	2.57	1.9