Simple Zones. Indicator draws zero line (open price of the day), then +0.25% (-0.25%), +0.5% (-0.5%), +0.75% (-0.75%) and +1% (-1%).
Statistic say that zero -0.25 & zero +0.25 are the range of flat. Movement from 0.25 to 0.5 is 68% in average. 0.5-0.75% is about 70%. 0.75 - 1% less than 50%.