forecasetCities is an asynchronous function (defined below) that will return the three day forecast of the cities passed in. Use the object viewer pop up to select "Chart" and compare them:
await forecast("New York", "San Francisco");
async function forecast(list)
{
var forecast = require("notebook")("tonic/forecast/1.0.0");
return { "NYC": await forecast.threeDay("New York"),
"SF": await forecast.threeDay("San Francisco") }
}