Indoor Environment Monitor

The household indoor environment monitor is presented in line chart format.
The user can choose a start date, an end date, a resolution for their real-time monitoring, and an indoor environment parameter to monitor.
Resolution represents the increments along the graph, and ranges from 1/2 hourly to monthly.

The environmental factors that can be chosen to monitor are: CO, CO2, Radon, Natural Gas, Humidity, and temperature.

The y-axis range is chosen according to the general background levels of pollutants and the threshold for pollutants becoming dangerous. E.g. CO becomes dangerous at 6ppm so the y-axis range will be 0ppm -10ppm in 1ppm increments.

The average concentration of the indoor pollutant in the house is displayed in ppm, relative humidity in per cent, and temperature in degrees C.