This dataset is composed of 4 periods of more or less continuous operation, but with varying length. The measured online data, with a frequency of per second, are stored chronologically in 4 compressed csv-files 'Data_MBR_Period_x'. The installation was running with some fixed and variable settings. The variable settings are stored in 'Settings_MBR'. They were only logged when changed, making this a small file. All additional information on the used sensors etc. is listed in the 'Metadata'-file, including the values of the fixed settings. Finally, 'Schematic.png' gives an overview of the MBR setup and the location of the sensors.