Title of Dataset: Durham Cathedral Bat Ultrasound Monitoring Data 2017-19 Principal Investigator Contact Information: Christopher Paul Bell mail@cpbell.co.uk Geographic location of data collection: Durham Cathedral Cloister Longitude: -1.5770673, Latitude: 54.7731104 (WGS84) Licence: Creative Commons Zero (CC0) Publication using the data: Bell, C.P. In press. Daily, seasonal and inter-annual variation in activity within a Common Pipistrelle swarming site and hibernaculum. Acta Chiropterologica. File list: Durham Cathedral Bat Ultrasound Monitoring Data 2017-19.csv Methodological Information: Refer to Bell, C.P. (In press) cited above for data collection methods. Data-specific information for Durham Cathedral Bat Ultrasound Monitoring Data 2017-19.csv: Number of variables: 3 Number of cases: 19,873 Variable list: "Date/Time" denotes the date and the beginning of the 1 hour period during which the values of the additional data variables were recorded in format
. "Roost Logger Files" denotes the number of zero-crossing files containing bat ultrasound extracted from continuous recording by an Anabat Roost Logger. "Anabat Express Files" denotes the number of zero-crossing files containting bat ultrasound extracted from continuous recording by an Anabat Express passive bat detector. The zero-crossing file extraction process in described in detail in Bell, C.P. (In press). Missing data are denoted by "NA".