A new miniature rose plant which has abundant, creamy white flowers and attractive foliage. Also provided are a valve and a nozzle, which is connected to the valve by a pipe. Thereafter, the loading holes are loaded with a plurality of initial explosives, a plurality of primers and a plurality of explosives in such a way that one or more air bladders are inserted into each of the loading holes and surrounded by the explosives. Thus, the target of the TC sensor is set for the xerographic system automatically. The computation can include computing first time differences between observation times of the PDUs at the first point from the first timestamps, computing second time differences between observation times of the PDUs at the second point from the second timestamps, and computing differences between corresponding first and second time differences having matching PDU identifiers. When an input search condition has been stored in the storing unit, a search result and an importance level from the storing unit with the use of the search condition as a key, and, when the input search condition has not been stored in the storing unit, a new search result based on the input search condition.