An enormous number of papers on high Tc superconductors have been reported since the discovery of Ba-La-Cu-O superconductor in 1986. It becomes difficult for many researchers to read out the papers related to their field. In this article we report the explanation of numerical database for high-Tc superconductors “SUPERCON” which has been constructed in NRIM. The crystal structures of high-Tc superconductors are classified using the common name used in many papers. The references are represented by a newly developed reference number. Numerical data on superconducting properties, Hall coefficient, thermal conductivity, thermoelectric power and specific heat are collected from the published papers. Metadata and the usage of “SUPERCON” are described.
