This dataset contains a number of experiments where sensory data is requested from a remote robot through the Internet. Each experiment is a time series of the roundtrip delays measured, which include network, operating systems and application delays. It includes experiments carried out in different geographical locations, with different software architectures and robots, also simulated ones. The range of the parameters that define the experiments (geographical location, amount of data requested, software in the loop, network technologies, etc.) is very broad. Some of these experiments have been reported previously in scientific publications, such as DOI 10.1109/JSEN.2013.2263381 and DOI 10.3390/s140202305. Other have been added afterwards. Each experiment consists of 2 files in plain text: a CSV one with the time series and a TXT one with the metadata: -Unique ID of the experiment-A short name (abbreviation).-Class (out of a number of classes; 'sim' means simulated).-Time units (milliseconds if absent)-Amount (density) of sensory data requested.-Kind of network (wifi, wired, mixed, etc.).-Geographical distance (approximate) and/or geographical location of robot and station.-Software used in both the robot and the station (OS, frameworks, etc.).-Date of the experiment (if available).