Calidad del aire

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/1921704/charts/1?bgcolor=%23ffffff&color=%23d62020&dynamic=true&results=30&title=Concentracion+LPG&type=spline&yaxismax=600&yaxismin=0"></iframe>

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/1921704/widgets/543120"></iframe>

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/1921704/widgets/543121"></iframe>