Question about the NFL Consensus in the SBR odds page?

[747planes]

What is that? How do you guys come up with the $ amount? Which book are those numbers based out of...one or more...which ones? Thanks.

http://www.sbrforum.com/betting-odds/consensus/

[SBR Contests]

The statistics are from various books

[747planes]

Which books? That really matters.
Also, if they are various books, the total amount on each side seems way less than what should be. Are these small time square books?

[747planes]

Pinnacle's limit is higher than some of the listed total amount wagered in the consensus page....