Hệ thống giám sát chất lượng nước

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/3229797/charts/1?bgcolor=%23ffffff&color=%23d62020&days=1&dynamic=true&results=60&type=line"></iframe>

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/3229797/charts/2?bgcolor=%23ffffff&color=%23d62020&days=1&dynamic=true&results=60&type=line"></iframe>

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/3229797/charts/3?bgcolor=%23ffffff&color=%23d62020&days=1&dynamic=true&results=60&type=line"></iframe>