Sampling is done at regular time intervals for certain sampling periods that are smaller than the time interval. Sampling is not integrating, i.e., parts of the medium escape observation. Discrete discrete The sampling strategy is unknown. unknown unknown Sampling strategy Sampling is done continuously, but not necessarily at regular time intervals. Sampling is integrating, i.e., none of the medium escapes observations. Continuous continuous 2 None of the codes in the table are applicable in the context of this particular observation. inapplicable inapplicable 2019-11-21T09:19:02.316Z Sampling is done at irregular time intervals. Event event Sampling strategy