Facing challenges in pivoting the data

Hi Anonymous ,
that is basically an unstacking exercise where you need an ID column for each row. You can create that as follows:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("Zc0/C8IwEAXwryI3d/H/LLRohS46hgxHejQHzSUkWfz2VhGJcbx378dTCjoXVoKOoIGrtwK6UdBSyMs9YLbkMLNJ7/hV7dvlsd5sv8HHtihMc6nvhkkM1XJXy8FbdI7G0l44ZR8ftd3X9iRjJEwl7WSaOdmaHmp6Y2Mx/qyeyU8Rg/3bPYLWTw==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Attribute = _t, Value = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Attribute", type text}, {"Value", type text}}),
    #"Added Index" = Table.AddIndexColumn(#"Changed Type", "Index", 0, 1, Int64.Type),
    #"Integer-Divided Column" = Table.TransformColumns(#"Added Index", {{"Index", each Number.IntegerDivide(_, 3), Int64.Type}}),
    #"Pivoted Column" = Table.Pivot(#"Integer-Divided Column", List.Distinct(#"Integer-Divided Column"[Attribute]), "Attribute", "Value")
in
    #"Pivoted Column"

See steps: "Add Index" and "Integer-Divide Column".