Systems and methods include determination of a first data analysis period, determination of a first plurality of sets of parameter values, each of the first plurality of sets of parameter values being associated with a respective time period within the first data analysis period and describing a statistical distribution of data points associated with the respective time period, determination of a statistical distribution associated with the first data analysis period based on the first plurality of sets of parameter values, determination of a system condition based on the statistical distribution associated with the first data analysis period, and initiation of an action based on the determined system condition.