System monitoring

Most of the system here runs on Raspberry PI's and native IP devices (like internet connected radio's and a TV with an IP connection). Besides logging human activity the system also keeps track of itself (temperatures, CPU & memory usage etc). 

RaspberryLast readingCurrent temperatureLowest temp.Highest temp.
Attic Raspberry CPU27-Jun-2017 20:58:2553.0028.2060.54
Databaseserver27-Jun-2017 20:58:220.000.0012.00
Garage Raspberry CPU27-Jun-2017 20:57:1549.2024.1261.68
Livingroom Raspberry CPU27-Jun-2017 20:59:1542.2031.7453.27
Raspberry Doorbell CPU27-Jun-2017 20:55:5143.3034.3445.48
Study Raspberry CPU27-Jun-2017 20:56:0161.8026.1082.92
Utility Closet Raspberry CPU27-Jun-2017 20:56:0160.0047.9461.89