A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Declare a second array, populate it in a loop and use it for the chart, e.g.
Dim arr2(0 To 11) As Double
Dim i As Long
For i = 0 To 11
arr2(i) = arr(i, 0)
Next i
ActiveChart.SeriesCollection(1).Values = arr2