To analyze when and what kind of feature quantity is calculated in a structure where a feature quantity is calculated from plural measured values.SOLUTION: An
information processor 101 includes a
communication unit 54 that acquires plural measured values, which are generated by plural
amplifier units, and plural pieces of first
time information appended to the plural measured values, a pattern designation unit 64 that designates two or more patterns of a pair of an identifier of an
amplifier unit and a kind of feature quantity, a feature quantity calculation unit 63 that acquires plural object period measured values, which are measured values generated by an
amplifier unit having an identifier included in each pattern and obtained during an object period, on the basis of the pieces of first
time information, and calculates a feature quantity of the plural object period measured values, a second
time information generation unit 65 that generates second time information associated with the object period on the basis of the pieces of first time information, and an output unit 66 that outputs the feature quantity, which is calculated by the feature quantity calculation unit, in connection with the second time information.SELECTED DRAWING: Figure 5