1207.25 X 1207.50 It will average only 1 tick (.25). Go here http://www.livecharts.com/ and watch for free. Plug in ES01U for the symbol.
That's right. During regular trading hours, probably 90+% of the time, spread is one tick (.25). Briefly goes to two ticks and occasionally three ticks now and then, especially if reacting to news. When two tick spread does occur, it generally comes right back down to just one tick after a flash or two. After hours though generally has much wider spreads, averaging 2-4 ticks.