That spreadsheet is very useful / informative. Please keep it growing. Maybe someday some missing values could be filled in.
You as Editor can also do some Filters that might be useful: filter by names to put all from each buyer together. Or type of CDR method.
The data filtering is not done by numeric values . Filter by price per tonne, or date of purchase to put into time order. And eventually some graphic summaries will be done.
This is a great start.
Doc / Dr TLUD / Paul S. Anderson, PhD --- Website: www.drtlud.com
Email: psan...@ilstu.edu Skype: paultlud
Exec. Dir. of Juntos Energy Solutions NFP Go to: www.JuntosNFP.org
Inventor of RoCC kilns and author of Biochar white paper : See www.woodgas.energy/resources
Author of “A Capitalist Carol” (free digital copies at www.capitalism21.org)
with pages 88 – 94 about solving the world crisis for clean cookstoves.