I show you what I think. If are ok, it's simple to adapt...
Following the scheme:
you have something like you need, but use a simple Chart Bar. The trick is to convert the data in the correct way. To do that I have Used VBA because it's more flexible...
Using this code inside a module connected to a button (Update) ... :
Dim N0(1 To 100) As String
Dim N1(1 To 100) As String
Dim N2(1 To 100) As String
Dim N3(1 To 100) As String
Range("B14:H44").Clear
Range("B1").Select
e = 0
For i = 1 To 9999
If ActiveCell.Offset(i, 0).Value = "" Then Exit For
e = e + 1
N0(e) = ActiveCell.Offset(i, 0).Value
N1(e) = ActiveCell.Offset(i, 1).Value
N2(e) = ActiveCell.Offset(i, 2).Value
N3(e) = ActiveCell.Offset(i, 3).Value
Next
Range("B15").Select
For i = 1 To e
If (i > 1) And (N0(i) = N0(1)) Then Exit For
ActiveCell.Offset((i - 1) * 4, 0).Value = "["
ActiveCell.Offset((i - 1) * 4 + 1, 0).Value = N0(i)
ActiveCell.Offset((i - 1) * 4 + 2, 0).Value = "]"
ActiveCell.Offset((i - 1) * 4 + 3, 0).Value = ""
Next
nRep = i - 1
Debug.Print nRep
nrow = 0
For i = 1 To e
If (i > nRep) And (N0(i) = N0(1)) Then nrow = nrow + 1
For k = 1 To 99
If ActiveCell.Offset((k - 1) * 4 + 1, 0).Value = "" Then Exit For
If ActiveCell.Offset((k - 1) * 4 + 1, 0).Value = N0(i) Then
ActiveCell.Offset((k - 1) * 4, 1 + nrow).Value = N1(i)
ActiveCell.Offset((k - 1) * 4 + 1, 1 + nrow).Value = N2(i)
ActiveCell.Offset((k - 1) * 4 + 2, 1 + nrow).Value = N3(i)
End If
Next
Next
The macro generate the NEW range Data for the Chart... The blank lines are used to visual divide the bars in base of the Mounth...
After, manually or if you prefer via VBA, you can adapt the chart (Decreasing the gap Width, add Labels ...)