Bookmakers' odds are only available for
1)Home team win
2)Draw
3)Away team win

And they are placed in the corresponding order in the table:

You can always choose not to view them in the "View" menu.

Where do these odds come from and how close are they to reality?

The odds are a seelction of best odds of several dozens top Czech bookmakers. They are a bit higher than average odds, but their correlation is real. Moreover if you use BetFair or PinnacleSports for betting, their odds are higher than those in BetAssistant.