Ionic 3 : How to display array of arrays?

Ionic Framework ionic-v3
1

I have a following consoled list of array how can i display the list?

31%20PM

I tried

this.item = this.data.["0"]  // this is throwing an error

//Also i tried
this.item = this.data[0]   
console.log(this.item)         //Shows the output as Undefined

how can I achieve this?
55%20PM

2

You should do a .forEach on the array that you want cycle.

3

Can u show me an example please