FYI: Below we provide one-year trading range charts for the major equity indices of 20 countries around the world. In each chart, the white line represents the index’s 50-day moving average, while the light blue shading represents its “normal” trading range. This is calculated as one standard deviation above and below the 50-day moving average. The red zone in each chart represents between one and two standard deviations above the 50-DMA, and moves into or above this area are considered overbought. The green zone represents between one and two standard deviations below the 50-DMA, and moves into or below this are are considered oversold.
Regards,
Ted
https://www.bespokepremium.com/think-big-blog/lots-of-downtrends-around-the-world/