Número aleatorio

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/1480642/charts/1?bgcolor=%23ffffff&color=%23d62020&dynamic=true&max=99&min=0&results=10&type=line&xaxis=HORA&yaxismax=100&yaxismin=0"></iframe>

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/1480642/widgets/350136"></iframe>

<iframe width="450" height="260" style="border: 1px solid #cccccc;" src="https://thingspeak.com/channels/1480642/maps/channel_show"></iframe>