title: Turning CSV data into nested JSON using OpenRefine
body: <p>So I am trying to parse some weather data from a csv format and convert it to a nested JSON format. I currently have a large csv file with columns for: A Station ID, Month, and then 30 Columns for the data (per day). I have a header at the top with basic titles. I am trying to convert that into a json format where the Station ID is the key name, and inside of it there the months 1-12 are another key name, and inside of those each of the 30 days are displayed. I tried several online and donwlaodable CSV to JSON, and spent time playing with OpenRefine, but could not figure out how to take the Station id as the header and then nest the months, and then days. Here is a sample of the CSV data for reference : <code>Station Name,Month,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
  AQW00061705,1,824C,824C,824C,824C,824C,824C,824C,824C,824C,824C,824C,824C,824C,824C,824C,824C,824C,824C,825C,825C,825C,825C,825C,825C,825C,825C,825C,825C,826C,826C,826C</code>. 
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  There are 12 of these columns for every station id making this process especially difficult. If anyone has an experience with OpenRefine, or converting this type of structured data to JSON, it would be very appreciated.</p>