Fig. 4

Proportion of the different data sources. In term of absolute number of data, the main source is literature (scientific literature, public reports, industrial technical reports, Ph.D. theses, and other). In this figure we differentiate data from boreholes as explained in the text; almost all the borehole data derive from NAGRA public reports. Note that for some specific properties the contribution of the new measurements has been significant, as, f.e., for magnetic susceptibility. The numbers refer to data as of December 2018