Pyramid 3-33 and 3-52 Errata?

[hal]

Yields listed below are "After tithe paid" Thus, if Tithe is 10%, and your yield was 8 Bushels, you owed to the church, .8 bushels in tithe. A yield after tithe for 8 bushels would thus be 8-.8 or 7.2 bushels.



Wheat: Sown: 2 bushels per acre Yield 7.2 bushels
Barley: Sown: 4 bushels per acre Yield: 17.6 bushels
Peas: Sown: 3 bushels Yield: 8 Bushels
Oats: 3 bushels Yield: 9 bushels

Price per quarter (8 bushels)
Wheat: 6 shillings or 72 pence (silver pennies)
Barley: 4 shillings 4 pence or 52 pence
Peas: 2 shillings 8 pence or 32 pence


I don't have a price listing for Oats per bushel. Now to translate the price per quarter to price per bushel, simply divide the values per quarter by 8. That works out to 9 pence per bushel for wheat, 6 pence 2 farthings for Barley, and 4 pence per bushel for peas.

Year this was taken from in England? 1299-1300