It's a good table. So are the tables you posted earlier. I certainly could use your tables just as well as ours.
As you point out, there are a lot of factors such as the degree of training and experience of both riders and horses that have a great effect upon the numbers in the tables.
A lot of people in Internet who claim to be real experts in such things produce very different tables. Maybe that's unfortunate. Maybe not. I'm not sure.
Question: You have a value in your table called mier. At the risk of looking like an idiot, can you tell me what that is?
Góðann daginn!