The video (not mine!) explains the settings of a similar system I am using. For more info, go to http://openenergymonitor.org/emon/
Other sites where I publish live data: http://daturach.github.io/
Home temperature, relative humidity and light measurement test using an ESP8266 with DHT11 and a photoresistor. LUA only, with NodeMCU firmware. The video channel is not mine, but interesting.
Click on 'More Information" :-)