A monitor data acquisition section acquires a plurality of monitor data relating to a processing state of one sample in a processing apparatus, via sensors. A data selection section selects monitor data belonging to an arbitrary processing division included in a plurality of processing divisions for the sample, from among the plurality of monitor data. A monitoring signal generation section generates monitoring signals based on the monitor data belonging to the arbitrary processing division selected by the data selection section. A display setting controller displays a plurality of monitoring signals obtained with respect to samples processed in the processing apparatus, on a display section in a time series manner.