| http://www.w3.org/ns/prov#value | - As the method of making up for the deterioration of the accuracy of position measurement, there is a method in which position measurement is effected in advance with respect to six or more chips, for example, a total of nine chips including the chips positioned in the respective ones of four quadrants of the arrangement coordinates ???? in FIG. 6, and from among the nine actually measured values,
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