How to consolidate similar entries in a sorted list without output to a worksheet using VBA/Excel

Question

I have an array which stores it\'s values in a sorted list. I have been using this sorted list to organise data, by date in several other spreadsheets.

My source dat

Answer 1

I added a month column in the summary.

Sub Summary()
    Dim ws As Worksheet
    Dim iMonth As Integer, x As Long, x1 As Long
    Dim Data, key
    Dim list(1 To 12) As Object

    For x = 1 To 12
        Set list(x) = CreateObject("System.Collections.SortedList")
    Next

    For Each ws In Worksheets
        If ws.Name <> "Summary" Then
           Call DeleteHidden    'Delete Hidden Rows/Columns in the active worksheet if any
            With ws

                For x = 1 To 207
                    If IsDate(.Cells(x, 1)) Then
                        iMonth = Month(.Cells(x, 1))
                        key = .Cells(x, 6)    'Grab Del Location

                        If list(iMonth).ContainsKey(key) Then
                            Data = list(iMonth)(key)
                        Else
                            ReDim Data(5)
                            Data(0) = iMonth
                            Data(1) = .Cells(x, 6)    'Grab Del Location
                        End If

                        Data(2) = Data(2) + 1
                        Data(3) = Data(3) + .Cells(x, 9)    'Grab No. Pieces
                        Data(4) = Data(4) + .Cells(x, 10)    'Grab Cargo Weight (LBS)
                        Data(5) = Data(5) + .Cells(x, 11)    'Grab Cost

                        list(iMonth)(key) = Data
                    End If
                Next
            End With
        End If
    Next

    With Worksheets("Summary")
        For x = 1 To 12
            For x1 = 0 To list(x).Count - 1
                .Range("A" & .Rows.Count).End(xlUp).Offset(1).Resize(1, 6).Value = list(x).GetByIndex(x1)
            Next
        Next
    End With
End Sub